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:
Mar. 31, 1992
Filed:
May. 07, 1991
Applicant:
Inventors:
Yuji Enomoto, Tsukuba, JP;
Kazunori Umeda, Tsukuba, JP;
Assignees:
Agency of Industrial Science and Technology, Tokyo, JP;
Ministry of International Trade and Industry, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ; C04B / ;
U.S. Cl.
CPC ...
501132 ; 501102 ; 252 12 ; 428697 ; 428701 ;
Abstract
An oxide type solid lubricant is made up of a sintered composite ceramic mass of Cr.sub.2 O.sub.3 and Na.sub.2 ZrO.sub.3 and has a Cr.sub.2 O.sub.3 content in the range of from 20 to 50% by weight.