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GB2311854B - Optical measurement instrument for living body - Google Patents

Optical measurement instrument for living body

Info

Publication number
GB2311854B
GB2311854B GB9713004A GB9713004A GB2311854B GB 2311854 B GB2311854 B GB 2311854B GB 9713004 A GB9713004 A GB 9713004A GB 9713004 A GB9713004 A GB 9713004A GB 2311854 B GB2311854 B GB 2311854B
Authority
GB
United Kingdom
Prior art keywords
living body
optical measurement
measurement instrument
instrument
optical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
GB9713004A
Other versions
GB2311854A (en
GB9713004D0 (en
GB2311854A9 (en
Inventor
Yuichi Yamashita
Atsushi Maki
Hideaki Koizumi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Publication of GB2311854A9 publication Critical patent/GB2311854A9/en
Priority claimed from JP29954295A external-priority patent/JP3588880B2/en
Priority claimed from JP31199395A external-priority patent/JP3682793B2/en
Priority claimed from JP31419595A external-priority patent/JP3543453B2/en
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of GB9713004D0 publication Critical patent/GB9713004D0/en
Publication of GB2311854A publication Critical patent/GB2311854A/en
Application granted granted Critical
Publication of GB2311854B publication Critical patent/GB2311854B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6813—Specially adapted to be attached to a specific body part
    • A61B5/6814—Head
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue
    • A61B5/14546—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue for measuring analytes not otherwise provided for, e.g. ions, cytochromes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue
    • A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
    • A61B5/14551—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue using optical sensors, e.g. spectral photometrical oximeters for measuring blood gases
    • A61B5/14552—Details of sensors specially adapted therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue
    • A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
    • A61B5/14551—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue using optical sensors, e.g. spectral photometrical oximeters for measuring blood gases
    • A61B5/14553—Measuring characteristics of blood in vivo, e.g. gas concentration or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue using optical sensors, e.g. spectral photometrical oximeters for measuring blood gases specially adapted for cerebral tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/16—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state
    • A61B5/18—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state for vehicle drivers or machine operators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K28/00—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions
    • B60K28/02—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the driver
    • B60K28/06—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the driver responsive to incapacity of driver
    • B60K28/066—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the driver responsive to incapacity of driver actuating a signalling device
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
    • G01N21/474—Details of optical heads therefor, e.g. using optical fibres
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/4795—Scattering, i.e. diffuse reflection spatially resolved investigating of object in scattering medium
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0233—Special features of optical sensors or probes classified in A61B5/00
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0233—Special features of optical sensors or probes classified in A61B5/00
    • A61B2562/0242—Special features of optical sensors or probes classified in A61B5/00 for varying or adjusting the optical path length in the tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/04—Arrangements of multiple sensors of the same type
    • A61B2562/046—Arrangements of multiple sensors of the same type in a matrix array
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
    • A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7235—Details of waveform analysis
    • A61B5/7253—Details of waveform analysis characterised by using transforms
    • A61B5/7257—Details of waveform analysis characterised by using transforms using Fourier transforms
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
    • G01N21/474—Details of optical heads therefor, e.g. using optical fibres
    • G01N2021/4742—Details of optical heads therefor, e.g. using optical fibres comprising optical fibres

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Biomedical Technology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Biophysics (AREA)
  • Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Hospice & Palliative Care (AREA)
  • Child & Adolescent Psychology (AREA)
  • Developmental Disabilities (AREA)
  • Educational Technology (AREA)
  • Neurology (AREA)
  • Psychiatry (AREA)
  • Psychology (AREA)
  • Social Psychology (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
GB9713004A 1995-11-17 1996-11-15 Optical measurement instrument for living body Expired - Lifetime GB2311854B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP29954295A JP3588880B2 (en) 1995-11-17 1995-11-17 Biological light measurement device
JP31199395A JP3682793B2 (en) 1995-11-30 1995-11-30 Light scattering device internal imaging device
JP31419595A JP3543453B2 (en) 1995-12-01 1995-12-01 Biological input device using optical biometric method
PCT/JP1996/003365 WO1997018755A1 (en) 1995-11-17 1996-11-15 Instrument for optical measurement of living body

Publications (4)

Publication Number Publication Date
GB2311854A9 GB2311854A9 (en)
GB9713004D0 GB9713004D0 (en) 1997-08-27
GB2311854A GB2311854A (en) 1997-10-08
GB2311854B true GB2311854B (en) 2000-03-22

Family

ID=27338317

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9713004A Expired - Lifetime GB2311854B (en) 1995-11-17 1996-11-15 Optical measurement instrument for living body

Country Status (4)

Country Link
CA (1) CA2210703C (en)
DE (1) DE19681107B4 (en)
GB (1) GB2311854B (en)
WO (1) WO1997018755A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2402233T7 (en) 1998-10-13 2015-04-23 Covidien Lp Non-invasive multichannel tissue oximeter
EP1008925B1 (en) * 1998-12-07 2006-01-11 Hitachi, Ltd. Device for controlling equipment by using signals from a living body
DE19922772A1 (en) * 1999-05-18 2001-02-08 Phiscience Gmbh Entwicklung Vo Device for determining various blood flow conditions and oxygen saturation in blood-bearing tissue
EP1221034B1 (en) * 1999-09-14 2013-05-22 The Research Foundation of State University of New York Method and system for imaging the dynamics of scattering medium
US6526297B1 (en) 1999-10-04 2003-02-25 Instrumentarium Corp. Method and apparatus for quantifying the hypnotic component of the depth of anesthesia by monitoring changes in optical scattering properties of brain tissue
JP3796086B2 (en) * 1999-12-27 2006-07-12 株式会社日立製作所 Biological light measurement device
IL138683A0 (en) * 2000-09-25 2001-10-31 Vital Medical Ltd Apparatus and method for monitoring tissue vitality parameters
JP4097522B2 (en) 2000-10-16 2008-06-11 株式会社日立メディコ Biological light measurement device
JP4090699B2 (en) * 2001-04-02 2008-05-28 株式会社日立製作所 Biological light measurement device
IL148795A0 (en) 2002-03-20 2002-09-12 Vital Medical Ltd Apparatus and method for monitoring tissue vitality parameters for the diagnosis of body metabolic emergency state
JP3635332B2 (en) 2003-03-20 2005-04-06 独立行政法人情報通信研究機構 Head wearing equipment
DE102004032094A1 (en) * 2004-07-01 2006-01-26 Micro-Epsilon Messtechnik Gmbh & Co Kg Blood oxygen saturation measuring method for use in field of anesthesia, involves comparing measured values, which are recorded from body of patient, with reference value for determining deviation of measured values from reference value
GB0426993D0 (en) 2004-12-09 2005-01-12 Council Cent Lab Res Councils Apparatus for depth-selective raman spectroscopy
JP5018105B2 (en) * 2007-01-25 2012-09-05 株式会社日立製作所 Biological light measurement device

Citations (24)

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Publication number Priority date Publication date Assignee Title
JPS57115232A (en) * 1980-07-09 1982-07-17 Deyuuku Univ Inc Apparatus for measuring metabolic action in internal organ
JPS61502660A (en) * 1984-07-11 1986-11-20 ザ・ジョンズ・ホプキンス・ユニバ−シティ Electro-optical device for monitoring instantaneous monomer-state oxygen concentrations produced during periods of optical radiation using a CW excitation source
JPS62231625A (en) * 1986-03-31 1987-10-12 住友電気工業株式会社 Optical CT scanner device
JPS635234A (en) * 1986-06-25 1988-01-11 Shimadzu Corp Unidimensional-two-dimensional photometric apparatus
JPS63305845A (en) * 1987-06-05 1988-12-13 Nissan Motor Co Ltd Apparatus for detecting abnormality of body
JPH01262839A (en) * 1987-12-02 1989-10-19 Boc Group Inc:The Frequency dividing multiplex type blood component monitor apparatus and method
GB2228314A (en) * 1989-02-16 1990-08-22 Hamamatsu Photonics Kk Optical examination apparatus
JPH03241414A (en) * 1990-02-20 1991-10-28 Nippon Telegr & Teleph Corp <Ntt> Operation device by head skin preparation potential pattern
JPH03505922A (en) * 1988-06-08 1991-12-19 バーバー，ランダル　エル． System for imaging random media
JPH04166144A (en) * 1990-10-31 1992-06-12 Matsushita Electric Ind Co Ltd Vital tissue measuring apparatus
JPH05103786A (en) * 1991-10-16 1993-04-27 Olympus Optical Co Ltd Measuring device for metabolism information
JPH05115485A (en) * 1991-10-25 1993-05-14 Hitachi Ltd Optical measuring instrument for living body
JPH05261110A (en) * 1992-03-19 1993-10-12 Hitachi Ltd Optically measuring system for living body
WO1993025145A1 (en) * 1992-06-17 1993-12-23 Nim Incorporated Examination of subjects using photon migration with high directionality techniques
WO1994005209A1 (en) * 1992-08-31 1994-03-17 Hitachi, Ltd. Optical ct apparatus
WO1994010901A1 (en) * 1992-11-09 1994-05-26 Boehringer Mannheim Gmbh Process and device for glucose determination in a biological matrix
JPH06181930A (en) * 1992-12-21 1994-07-05 Hitachi Ltd Organismic light measuring device
JPH06245938A (en) * 1993-02-23 1994-09-06 Hitachi Ltd Optical measuring instrument
DE4318823A1 (en) * 1993-06-07 1994-12-08 Zeiss Carl Fa Device for scanning optical examination of tissue
JPH07103884A (en) * 1993-10-04 1995-04-21 Technol Res Assoc Of Medical & Welfare Apparatus Optical ct
JPH07117595A (en) * 1993-10-21 1995-05-09 Fujikura Ltd Asleep driving prevention device
JPH07120384A (en) * 1993-10-25 1995-05-12 Hitachi Ltd Method and apparatus for optical measurement
JPH07204168A (en) * 1994-01-12 1995-08-08 Nou Kinou Kenkyusho:Kk Device for automatically identifying information on living body
JPH0919408A (en) * 1995-07-05 1997-01-21 Hitachi Ltd Living body light measuring device and image forming method in the device

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US5213105A (en) * 1990-12-04 1993-05-25 Research Corporation Technologies, Inc. Frequency domain optical imaging using diffusion of intensity modulated radiation
DE4340072C2 (en) * 1993-11-24 1996-05-15 Siemens Ag Device for examining tissue with light

Patent Citations (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57115232A (en) * 1980-07-09 1982-07-17 Deyuuku Univ Inc Apparatus for measuring metabolic action in internal organ
JPS61502660A (en) * 1984-07-11 1986-11-20 ザ・ジョンズ・ホプキンス・ユニバ−シティ Electro-optical device for monitoring instantaneous monomer-state oxygen concentrations produced during periods of optical radiation using a CW excitation source
JPS62231625A (en) * 1986-03-31 1987-10-12 住友電気工業株式会社 Optical CT scanner device
JPS635234A (en) * 1986-06-25 1988-01-11 Shimadzu Corp Unidimensional-two-dimensional photometric apparatus
JPS63305845A (en) * 1987-06-05 1988-12-13 Nissan Motor Co Ltd Apparatus for detecting abnormality of body
JPH01262839A (en) * 1987-12-02 1989-10-19 Boc Group Inc:The Frequency dividing multiplex type blood component monitor apparatus and method
JPH03505922A (en) * 1988-06-08 1991-12-19 バーバー，ランダル　エル． System for imaging random media
GB2228314A (en) * 1989-02-16 1990-08-22 Hamamatsu Photonics Kk Optical examination apparatus
JPH03241414A (en) * 1990-02-20 1991-10-28 Nippon Telegr & Teleph Corp <Ntt> Operation device by head skin preparation potential pattern
JPH04166144A (en) * 1990-10-31 1992-06-12 Matsushita Electric Ind Co Ltd Vital tissue measuring apparatus
JPH05103786A (en) * 1991-10-16 1993-04-27 Olympus Optical Co Ltd Measuring device for metabolism information
JPH05115485A (en) * 1991-10-25 1993-05-14 Hitachi Ltd Optical measuring instrument for living body
JPH05261110A (en) * 1992-03-19 1993-10-12 Hitachi Ltd Optically measuring system for living body
WO1993025145A1 (en) * 1992-06-17 1993-12-23 Nim Incorporated Examination of subjects using photon migration with high directionality techniques
WO1994005209A1 (en) * 1992-08-31 1994-03-17 Hitachi, Ltd. Optical ct apparatus
WO1994010901A1 (en) * 1992-11-09 1994-05-26 Boehringer Mannheim Gmbh Process and device for glucose determination in a biological matrix
JPH06181930A (en) * 1992-12-21 1994-07-05 Hitachi Ltd Organismic light measuring device
JPH06245938A (en) * 1993-02-23 1994-09-06 Hitachi Ltd Optical measuring instrument
DE4318823A1 (en) * 1993-06-07 1994-12-08 Zeiss Carl Fa Device for scanning optical examination of tissue
JPH07103884A (en) * 1993-10-04 1995-04-21 Technol Res Assoc Of Medical & Welfare Apparatus Optical ct
JPH07117595A (en) * 1993-10-21 1995-05-09 Fujikura Ltd Asleep driving prevention device
JPH07120384A (en) * 1993-10-25 1995-05-12 Hitachi Ltd Method and apparatus for optical measurement
JPH07204168A (en) * 1994-01-12 1995-08-08 Nou Kinou Kenkyusho:Kk Device for automatically identifying information on living body
JPH0919408A (en) * 1995-07-05 1997-01-21 Hitachi Ltd Living body light measuring device and image forming method in the device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP Utility Model Registration No. 3016160, Z1 *

Also Published As

Publication number Publication date
GB2311854A (en) 1997-10-08
WO1997018755A1 (en) 1997-05-29
GB9713004D0 (en) 1997-08-27
DE19681107T1 (en) 1997-12-11
CA2210703C (en) 2001-10-09
GB2311854A9 (en)
CA2210703A1 (en) 1997-05-29
DE19681107B4 (en) 2006-01-26

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Legal Events

Date Code Title Description
789A Request for publication of translation (sect. 89(a)/1977)
PE20 Patent expired after termination of 20 years

Expiry date: 20161114