Colorant for ocular lenses and material for colored ocular...

Organic compounds -- part of the class 532-570 series – Organic compounds – Azo

Reexamination Certificate

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Details

C548S365400, C008S507000, C623S006560, C623S006580

Reexamination Certificate

active

11270527

ABSTRACT:
A colorant for ocular lenses represented by the formula (I) defined herein or a colorant for ocular lenses represented by the formula (II) defined herein.

REFERENCES:
patent: 2274782 (1942-03-01), Gaspar
patent: 2369355 (1945-02-01), Kendall et al.
patent: 3984199 (1976-10-01), Heinrich et al.
patent: 5662707 (1997-09-01), Jinkerson
patent: 6310215 (2001-10-01), Iwamoto
patent: 0 131 468 (1985-01-01), None
patent: 0 899 590 (1999-03-01), None
patent: 1 043 365 (2000-10-01), None
patent: 1 431 350 (2004-06-01), None
patent: 1-280464 (1989-11-01), None
patent: 7-24052 (1995-01-01), None
patent: WO 97/01114 (1997-01-01), None
European Search Report dated Mar. 15, 2006.

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