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:
Feb. 28, 1989
Filed:
Jun. 30, 1987
Tadahiko Watanabe, Saga, JP;
Kazuhisa Shobu, Saga, JP;
Yuko Tsuya, Ibaragi, JP;
Yuji Enomoto, Ibaragi, JP;
Junshiro Hayakawa, Fukuoka, JP;
Osamu Yagishita, Fukuoka, JP;
Hideki Yamamoto, Fukuoka, JP;
Eiichi Sudoh, Fukuoka, JP;
Other;
Tokyo Kokyu Rozai Co., Ltd., Fukuoka, JP;
Abstract
The present invention is characterized by ceramic materials comprising ceramic sintered bodies consisting of (1) 1-90 wt % chromium carbide and the remainder carbonic titanium nitride; (2) 1-90 wt % chromium carbide, 0.1-5 wt % B.sub.4 C and the remainder titanium carbo-nitride; or (3) either of the above compositions plus less than 95 wt % of a metal boride such as Ti or Zr. Such ceramic sintered bodies are used for cutting tools or wear-resistant machine parts because of their high density, high hardness and high strength.