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:
Apr. 04, 2000
Filed:
Nov. 23, 1998
Applicant:
Inventors:
Piero Cavalleri, Pieve Di Teco, IT;
Sergio Massirio, Finale Ligure, IT;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430507 ; 430510 ; 430517 ; 430522 ;
Abstract
Photographic elements are disclosed having on a support a silver halide emulsion layer sensitive to radiation other than blue light in addition to its intrinsic sensitivity to blue region, and a yellow filter layer between the silver halide emulsion layers and the source of exposure, the yellow filter layer containing a yellow filter dye represented by the structural formula: ##STR1## wherein: R is hydrogen, alkyl group or aryl group;