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:
Nov. 21, 1989
Filed:
Jun. 12, 1987
Applicant:
Inventors:
Jeffrey D Gelorme, Binghamton, NY (US);
Robert J Cox, Watsonville, CA (US);
Sergio A Gutierrez, San Jose, CA (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ; A01B / ; H02B / ;
U.S. Cl.
CPC ...
430 14 ; 430280 ; 430 18 ; 430271 ; 430275 ; 522170 ; 428195 ; 428201 ; 428901 ; 428209 ; 428332 ; 428220 ; 174 685 ; 361379 ; 361412 ;
Abstract
A photocurable composition which is useful as a permanent resist in the manufacture of printed circuit boards and packages of such boards comprises a multifunctional epoxidized resin, a reactive diluent, a cationic photoinitiator and, optionally, an exposure indicator, a coating aid and a photosensitizer.