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. 19, 1978
Filed:
Mar. 02, 1977
Applicant:
Inventor:
Robert S Hamilton, Youngstown, NY (US);
Assignee:
The Carborundum Company, Niagara Falls, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C01B / ; H01M / ;
U.S. Cl.
CPC ...
423290 ; 106 395 ; 106 55 ; 429136 ; 429102 ;
Abstract
A boron nitride bonded boron nitride fiber article and the method for its manufacture which comprises forming a shaped article with a composition comprising boron oxide fibers and boric acid, heating the composition in an anhydrous gas to a temperature above the melting point of the boric acid and nitriding the resulting article in ammonia gas.