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

Novel indeno-fused photochromic naphthopyrans.

Info

Publication number
ZA200202037B
ZA200202037B ZA200202037A ZA200202037A ZA200202037B ZA 200202037 B ZA200202037 B ZA 200202037B ZA 200202037 A ZA200202037 A ZA 200202037A ZA 200202037 A ZA200202037 A ZA 200202037A ZA 200202037 B ZA200202037 B ZA 200202037B
Authority
ZA
South Africa
Prior art keywords
photochromic naphthopyrans
novel indeno
fused photochromic
fused
indeno
Prior art date
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.)
Filing date
Publication date
Application filed by Transitions Optical Inc filed Critical Transitions Optical Inc
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)

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