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. 08, 1991
Filed:
Mar. 26, 1990
Applicant:
Inventors:
Robert E Hawkins, Upton, MA (US);
Richard Small, Marlborough, MA (US);
Alaric Naiman, Cambridge, MA (US);
Assignee:
Shipley Company Inc., Newton, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
204 15 ; 2041802 ; 427 96 ; 427 98 ; 430314 ;
Abstract
The disclosed invention relates to a method of manufacturing hybrid circuit boards which uses the step of electrodeposition of a photoresist composition onto said boards. This step represents improvements in the prior art use of dry film or other types of photoresists which did not conform to all three dimensional surfaces and which were not aqueous developable.