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:
Aug. 18, 1992
Filed:
Jan. 03, 1991
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430313 ; 430275 ; 430277 ; 430278 ; 430279 ; 430314 ; 430315 ; 430318 ;
Abstract
In conducting wiring by masking the portion other than the portion to be wired of a metallic laminate with a photoresist for plating and subjecting only the portion to be wired to pattern plating, the provision of a noble metal layer made of gold, platinum or the like, or a metallic layer made of a metal having a larger ionization tendency than that of a metal used in the pattern plating on the metallic layer constituting the undercoat of the photoresist for plating enables the peeling of the resist for plating to be prevented and excellent fine wiring to be conducted.