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:
May. 14, 1985
Filed:
Oct. 31, 1983
Applicant:
Inventors:
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C / ; C22C / ;
U.S. Cl.
CPC ...
148432 ; 148436 ; 148442 ; 420489 ; 420492 ; 420495 ; 420497 ; 420500 ; 420587 ; 420588 ; 200266 ;
Abstract
A contact material for a vacuum circuit breaker consists essentially of copper as the basic component, and, as the other components, 35% by weight or below of chromium and 50% by weight or below of tantalum, the total quantity of chromium and tantalum in said contact material being 10% by weight and above.
Okumura, Mitsuhiro. (1985). Contact material for vacuum circuit breaker (U.S. Patent No. 4517033). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4517033
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile