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:
Feb. 27, 1990
Filed:
May. 16, 1988
Applicant:
Inventors:
Shinhoo Kang, Wayland, MA (US);
Charles Brecher, Lexington, MA (US);
Philip C Wingert, Greensboro, NC (US);
Assignee:
Technitrol, Inc., , PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
148431 ; 200266 ; 428929 ;
Abstract
An erosion resistant electrical contact material and a method of making the material is described. The material comprises from about 10 to about 20 volume percent of SnO.sub.2, from about 0.45 to about 1.2 volume percent of an oxide selected from the group consisting of TiO.sub.2, CeO.sub.2, ZrO.sub.2, HfO.sub.2, and combinations thereof and the balance being substantially silver.