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. 22, 2003
Filed:
Sep. 14, 2001
Applicant:
Inventors:
Shinji Yamada, Otsu, JP;
Yutaka Tsukada, Shiga-ken, JP;
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 3/00 ; G03C 3/00 ; G03C 5/00 ;
U.S. Cl.
CPC ...
B32B 3/00 ; G03C 3/00 ; G03C 5/00 ;
Abstract
A printed circuit board comprises a base substrate including a conductive circuit pattern on a top surface thereof, and at least one photosensitive resin layer positioned on the base substrate. The resin layer exposure is performed through a photomask having light-shielding and exposure amount adjusting portions as part thereof to accommodate for varying resin layer thicknesses.