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, 1985
Filed:
Apr. 12, 1984
Applicant:
Inventor:
Thomas Johansson, Ljungaverk, SE;
Assignee:
KemaNord AB, Stockholm, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423344 ; 501 97 ;
Abstract
A process for the production of silicon nitride by reaction of silicon dioxide, carbon and nitrogen at temperatures above about 1300.degree. C. whereby a partial pressure of nitrogen above 1 bar is maintained during the reaction.