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:
Jul. 23, 1996
Filed:
Apr. 14, 1994
Applicant:
Inventors:
Stephen D Dunmead, Midland, MI (US);
Alan W Weimer, Midland, MI (US);
Daniel F Carroll, Midland, MI (US);
Glenn A Eisman, Midland, MI (US);
Gene A Cochran, Midland, MI (US);
David W Susnitzky, Midland, MI (US);
Donald R Beaman, Midland, MI (US);
Kevin J Nilsen, Midland, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ; C04B / ;
U.S. Cl.
CPC ...
264 297 ; 264 60 ; 264 63 ; 264 66 ;
Abstract
Silicon carbide/silicon nitride composites are prepared by carbothermal reduction of crystalline silica powder, carbon powder and optionally crsytalline silicon nitride powder. The crystalline silicon carbide portion of the composite has a mean number diameter less than about 700 nanometers and contains nitrogen.