FR827944A - Improvements to the means for measuring the opacity of a liquid, in particular an oil - Google Patents

Improvements to the means for measuring the opacity of a liquid, in particular an oil

Info

Publication number: FR827944A
Authority: FR; France
Prior art keywords: opacity; oil; measuring; liquid
Prior art date: 1936-10-16
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

Application number

Other languages

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.)

YACCO SAF

Original Assignee

YACCO SAF

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.)

1936-10-16

Filing date

1937-10-15

Publication date

1938-05-06

1937-10-15 Application filed by YACCO SAF filed Critical YACCO SAF

1938-05-06 Application granted granted Critical

1938-05-06 Publication of FR827944A publication Critical patent/FR827944A/en

Status Expired legal-status Critical Current

Classifications

- 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
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/29—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using visual detection

Landscapes

Physics & Mathematics (AREA)
Spectroscopy & Molecular Physics (AREA)
Health & Medical Sciences (AREA)
Life Sciences & Earth Sciences (AREA)
Chemical & Material Sciences (AREA)
Analytical Chemistry (AREA)
Biochemistry (AREA)
General Health & Medical Sciences (AREA)
General Physics & Mathematics (AREA)
Immunology (AREA)
Pathology (AREA)
Investigating Or Analysing Materials By Optical Means (AREA)

FR827944D 1936-10-16 1937-10-15 Improvements to the means for measuring the opacity of a liquid, in particular an oil Expired FR827944A (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
LU202587X		1936-10-16
LU110837X		1937-08-11

Publications (1)

Publication Number	Publication Date
FR827944A true FR827944A (en)	1938-05-06

Family

ID=26640393

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR827944D Expired FR827944A (en)	1936-10-16	1937-10-15	Improvements to the means for measuring the opacity of a liquid, in particular an oil

Country Status (4)

Country	Link
CH (1)	CH202587A (en)
DE (1)	DE677614C (en)
FR (1)	FR827944A (en)
GB (1)	GB500892A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2486080A (en) *	1945-06-30	1949-10-25	Atlantic Refining Co	Method and apparatus for testing oils
US2695544A (en) *	1951-11-10	1954-11-30	Mortimer W Brenner	Equipment for testing the flatness of objects
US2889736A (en) *	1954-08-17	1959-06-09	Edward M Borg	Oil testing apparatus
US3084592A (en) *	1959-11-20	1963-04-09	Willard L Scott	Pipette construction
US5416589A (en) *	1991-10-04	1995-05-16	Kms Fusion, Inc.	Electro-optical system for gauging surface profile deviations
US5517575A (en) *	1991-10-04	1996-05-14	Ladewski; Theodore B.	Methods of correcting optically generated errors in an electro-optical gauging system
US5463464A (en) *	1991-10-04	1995-10-31	Kms Fusion, Inc.	Electro-optical system for gauging surface profile deviations using infrared radiation
US5465153A (en) *	1991-10-04	1995-11-07	Kms Fusion, Inc.	Electro-optical system for gauging specular surface profile deviations
US5289267A (en) *	1991-10-04	1994-02-22	Kms Fusion, Inc.	Electro-optical system for gauging surface profile deviations
FR2905183B1 (en) *	2006-08-22	2008-12-26	Essilor Int	DEMONSTRATION APPARATUS FOR TRANSPARENT SURFACE ANTIREFLECTION COATING

1936
- 1936-10-29 DE DES124737D patent/DE677614C/en not_active Expired
1937
- 1937-09-22 CH CH202587D patent/CH202587A/en unknown
- 1937-10-11 GB GB27615/37A patent/GB500892A/en not_active Expired
- 1937-10-15 FR FR827944D patent/FR827944A/en not_active Expired

Also Published As

Publication number	Publication date
GB500892A (en)	1939-02-17
CH202587A (en)	1939-01-31
DE677614C (en)	1939-06-29

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