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. 28, 1980
Filed:
Feb. 19, 1976
Applicant:
Inventors:
Joseph J Piascinski, Leola, PA (US);
Ernest E Doerschuk, III, East Petersburg, PA (US);
Assignee:
RCA Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430-5 ; 156634 ; 156644 ; 1566591 ; 430 23 ; 430270 ; 430274 ; 430320 ; 430323 ;
Abstract
Method comprises applying to a surface to be etched a coating of a liquid composition having a pH of about 5.8 to 7.0 and comprising an alkali caseinate, an alkali dichromate photosensitizer, sodium borate and water. The layer is dried, photoexposed, developed and baked to produce an etch-resistant stencil.
Piascinski, Joseph. (1980). Method for making etch-resistant stencil with dichromate-sensitized (U.S. Patent No. 4230781). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4230781
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile