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:
Jan. 06, 1981
Filed:
Feb. 26, 1979
Applicant:
Inventor:
Akira Shibata, Yokohama, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F / ; C22C / ; C22C / ;
U.S. Cl.
CPC ...
75234 ; 75206 ; 75236 ;
Abstract
Ag-SnO alloy contact materials of such dimensions which are hard to achieve internal oxidation without producing depleted cores due to lack of tin oxides, are produced by metallurgically integrating pieces of said alloy material, said pieces being of such dimensions that they are easily internally oxidized without any depleted cores. Integration consists of congregating or assemblying said pieces by kneading under pressure and at a temperature higher than 700.degree. C. into a mass in which said pieces coalesce to each other without any distinctive silver interface thereamong, and through which tin oxides are uniformly dispersed substantially without any grain boundaries.