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:
Apr. 11, 1995
Filed:
Dec. 22, 1992
Applicant:
Inventors:
Karuppiah Chandrasekaran, Sayre, PA (US);
Mark R McKeever, Sayre, PA (US);
James W O'Neil, Chadds Ford, PA (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ; G03C / ;
U.S. Cl.
CPC ...
430260 ; 430258 ; 430262 ; 430263 ; 430288 ; 430312 ; 430910 ;
Abstract
The use of a two layer photoimageable, aqueous processable, resist with a hydrophic binder in the outermost layer provides a permanent coating highly resistant to printed circuit processing chemicals. This resistance results in levels of adsorbed or absorbed ionic contamination less than 14 micrograms per square inch.
Chandrasekaran, Karuppiah. (1995). Aqueous processable, multilayer, photoimageable permanent coatings for (U.S. Patent No. 5405731). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5405731
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile