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:
Oct. 16, 1984
Filed:
Oct. 31, 1983
Applicant:
Inventors:
Simon L Chu, Dobbs Ferry, NY (US);
Eugene Golda, Monsey, NY (US);
Jen-Chi Huang, Ossining, NY (US);
Alan Wilkes, Brewster, NY (US);
Assignee:
Polychrome Corporation, Yonkers, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41N / ; C25D / ;
U.S. Cl.
CPC ...
204 33 ; 101459 ; 2041294 ;
Abstract
A method for the production of aluminum substrates useful in the production of lithographic printing plates which comprises first mechanically graining at least one surface of an aluminum sheet to obtain a pumice grained surface of the aluminum sheet, and then electrolytically etching said grained surface with alternating current.