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:
Jan. 02, 1996
Filed:
Feb. 14, 1995
Applicant:
Inventors:
Yoshitomo Shintani, Susono, JP;
Tetsuya Suganuma, Nagoya, JP;
Shuitsu Matsuo, Atsugi, JP;
Hajime Saito, Nissin, JP;
Hidenori Yamaoka, Odawara, JP;
Nobuhisa Kurono, Aichi, JP;
Hiroaki Kotaka, Nagoya, JP;
Assignees:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Toshiba Ceramics Co., Ltd., Hadano, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C30B / ;
U.S. Cl.
CPC ...
117 75 ; 117-1 ; 117 87 ;
Abstract
Aluminium borate whiskers by which a composite material having a higher strength than ever is available by definitely suppressing a generation of spinel along the surface of the whiskers are prepared by heating aluminium borate whiskers bearing a r-alumina surface layer in an atmosphere of ammonia gas or ammonia gas and a hydrocarbon gas such that a layer of a nitro-oxide and oxide of aluminium is generated along the surface of the whiskers.