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. 17, 2003
Filed:
Jun. 29, 2001
Applicant:
Inventors:
Agota F. Fehervari, Lexington, MA (US);
William L. Grimm, Lancaster, PA (US);
Assignee:
Polaroid Corporation, Waltham, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C 8/52 ; G03C 1/76 ;
U.S. Cl.
CPC ...
G03C 8/52 ; G03C 1/76 ;
Abstract
A photographic film with a polymeric acid-reacting neutralizing layer comprising a half ester of isobutylene/maleic anhydride copolymer is provided herein. This polymeric acid-reacting neutralizing layer is used to attenuate a photographic film's development process, which is effective under alkali conditions, by lowering the pH of the alkaline processing composition.