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:
Jul. 17, 1979
Filed:
Dec. 14, 1977
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D / ; C25D / ; H01C / ;
U.S. Cl.
CPC ...
204 15 ; 29620 ; 29625 ; 204 / ; 204 / ; 427101 ;
Abstract
A thin film resistor is produced by forming a film of tantalum pentoxide on part of a pattern of tantalum nitride, simultaneously forming an electroconductor and an electrode on other part, where no film of tantalum pentoxide is formed, by means of a metal cheaper than gold, and heating the pattern in an inert gas atmosphere.