ZA200202037B - Novel indeno-fused photochromic naphthopyrans. - Google Patents

Novel indeno-fused photochromic naphthopyrans.

Info

Publication number: ZA200202037B
Authority: ZA; South Africa
Prior art keywords: photochromic naphthopyrans; novel indeno; fused photochromic; fused; indeno
Prior art date: 1999-09-17

Application number

ZA200202037A

Inventor

Clara M Nelson

Olga G Petrovskaia

Barry Van Gemert

Anu Chopra

David B Knowles

Anil Kumar

Original Assignee

Transitions Optical Inc

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.)

1999-09-17

Filing date

2002-03-12

Publication date

2003-06-12

2002-03-12 Application filed by Transitions Optical Inc filed Critical Transitions Optical Inc

2003-06-12 Publication of ZA200202037B publication Critical patent/ZA200202037B/en

Links

ZA200202037A 1999-09-17 2002-03-12 Novel indeno-fused photochromic naphthopyrans. ZA200202037B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US15442899P	1999-09-17	1999-09-17

Publications (1)

Publication Number	Publication Date
ZA200202037B true ZA200202037B (en)	2003-06-12

Family

ID=30442340

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ZA200202037A ZA200202037B (en)	1999-09-17	2002-03-12	Novel indeno-fused photochromic naphthopyrans.

Country Status (1)

Country	Link
ZA (1)	ZA200202037B (en)

2002
- 2002-03-12 ZA ZA200202037A patent/ZA200202037B/en unknown

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