The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 13, 2006
Filed:
Oct. 11, 1999
Suruliappa Gowper Jeganathan, Glen Mills, PA (US);
Stéphan Biry, Village-Neuf, FR;
Peter Nesvadba, Marly, CH;
David George Leppard, Marly, CH;
Suruliappa Gowper Jeganathan, Glen Mills, PA (US);
Stéphan Biry, Village-Neuf, FR;
Peter Nesvadba, Marly, CH;
David George Leppard, Marly, CH;
Ciba Specialty Chemicals Corp., Tarrytown, NY (US);
Abstract
A color photographic material is described containing a compound of formula (I) wherein, if n=1, Ris, inter alia, a radical of formula (II), and, if n=2, Ris unsubstituted or C–Calkyl- or hydroxy-substituted phenylene or naphthylene; or —R—X—R—, and other residues are as defined in claim 1. The compound of formula (I) is effective as scavenger of the oxidized form of the developer (Dox scavenger), especially when contained in an interlayer between light sensitive layers. Selected compounds of this class can also be used as additives, for example as dye stabilizer, in color photographic materials, or as an antioxidant for organic materials.