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. 01, 1987
Filed:
Dec. 05, 1985
Applicant:
Inventors:
Robert J Dobbs, Monroeton, PA (US);
Shuford M Alexander, Jr, Dallas, TX (US);
Assignee:
GTE Products Corporation, Stamford, CT (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
51307 ; 51308 ; 428331 ; 428700 ; 428698 ;
Abstract
A polishing compound is disclosed which is relatively high purity silicon nitride, the silicon nitride comprising particles having equiaxial crystals, the particle size being from about 0.03 to about 5 microns.