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:
Jun. 09, 1992
Filed:
May. 29, 1990
Applicant:
Inventor:
Martin Y Hsieh, Palo Alto, CA (US);
Assignee:
The Morgan Crucible Company plc, Windsor, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501 98 ; 501 96 ; 501 97 ;
Abstract
A pressureless sintered silicon nitride-boron nitride composite having high density and low elastic modulus has a composition of 2 to 30 wt. % boron nitride and 70 to 98% of a blend of yttrium oxide, aluminum nitride and silicon nitride.