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:
Sep. 21, 1982
Filed:
Sep. 18, 1981
Applicant:
Inventor:
J Thomas Smith, Acton, MA (US);
Assignee:
GTE Laboratories Incorporated, Waltham, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ; C04B / ;
U.S. Cl.
CPC ...
501 97 ;
Abstract
Si.sub.3 N.sub.4 polycrystalline ceramic bodies formed from starting materials containing about 2 to 4 weight percent SiO.sub.2, less than 0.1 weight percent cation impurities and Y.sub.2 O.sub.3 in critical amounts exhibit optimum oxidation resistance. Such bodies are useful as engine parts or components or as regenerator structures for waste heat recovery.
Quick Actions:
Smith, J. (1982). Oxidation resistant silicon nitride containing rare earth oxide (U.S. Patent No. 4350771). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4350771
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile