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:
Sep. 19, 1978
Filed:
Sep. 06, 1974
Applicant:
Inventors:
Lewis R Hamilton, Rochester, NY (US);
Richard C Sutton, Rochester, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
96 82 ; 96 8 / ; 96 8 / ;
Abstract
The incorporation of polymers containing at least 80% by weight of substituted or unsubstituted poly(vinyl imidazole) in a photographic element containing fluorescent optical brighteners immobilizes the brighteners. The photographic elements resist loss of brightness due to photographic processing or washing.