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:
Dec. 11, 1990
Filed:
May. 15, 1989
Applicant:
Inventors:
Frankie E Phelps, Washington Township, Westmoreland County, PA (US);
Gerald W Leech, Apollo, PA (US);
Assignee:
Aluminum Company of America, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ; C04B / ;
U.S. Cl.
CPC ...
501 98 ; 423327 ;
Abstract
A process for producing an unsintered SiAlON material by carbothermic reaction without the use of contaminating transition metal oxides to increase the rate of reaction. The process includes providing small quantities of SiAlON crystals which seed the reaction. The phase of the SiAlON seed crystals will determine the phase of the SiAlON produced.