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:
May. 11, 1993
Filed:
Jul. 08, 1991
Applicant:
Inventors:
Yoshihumi Takeda, Jouetsu, JP;
Akira Hayashida, Higashimurayama, JP;
Toshinobu Ishihara, Jouetsu, JP;
Assignee:
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ; C04B / ;
U.S. Cl.
CPC ...
501 97 ; 264 65 ;
Abstract
An organic silazane polymer is prepared by reacting ammonia gas with a mixture of a trihalosilane and a monohalosilane, for example, methyltrichlorosilane and trimethylchlorosilane in an organic solvent to form a silazane compound, and heating the silazane compound at 200 to 350.degree. C. for polymerization. By melting, shaping, infusibilizing, and firing the silazane polymer, there is obtained a ceramic material.