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. 04, 1991
Filed:
Oct. 05, 1990
Applicant:
Inventors:
Paul A Jargiello, Livingston, NJ (US);
Thomas J Dooley, Teaneck, NJ (US);
Assignee:
Polychrome Corporation, Yonkers, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430331 ; 430309 ; 430330 ; 430432 ; 562 21 ;
Abstract
A composition useful for the protection of actinic light-exposed presensitized lithographic printing plates. The composition contains an effective amount of the di-potassium salt of hydroxyethylidene diphosphonic acid dissolved in water. The composition is applied to the surface of the revealed substrate of the plates after they have been developed but before treatment to heat, to prevent surface contamination from the heat treatment.