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:
Nov. 30, 1993
Filed:
Mar. 01, 1993
Donald R Diehl, Rochester, NY (US);
Glenn M Brown, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
Solid particle dispersions of dyes according to the formula: ##STR1## wherein D is selected from the group consisting of ##STR2## are disclosed as filter dyes for photographic elements. In this formula, R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are each independently hydrogen, substituted or unsubstituted alkyl, or substituted or unsubstituted aryl. R is a carboxy or sulfonamido substituent. L.sup.1 through L.sup.5 are each independently substituted or unsubstituted methine groups, and m is 0 or 1. The dyes of the invention are particularly useful as filter dyes for light in the ultraviolet and short blue wavelength regions of the spectrum.