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:
Oct. 16, 1990
Filed:
Oct. 19, 1989
Applicant:
Inventors:
Takeshi Saitoh, Kawasaki, JP;
Tuyoshi Saito, Kawasaki, JP;
Mitsuo Ueki, Kawasaki, JP;
Hisashi Suzuki, Tokyo, JP;
Keiichi Kobori, Kawasaki, JP;
Assignee:
Toshiba Tungaloy Co., Ltd., Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
G22F / ;
U.S. Cl.
CPC ...
419 13 ; 419 16 ; 419 54 ; 419 57 ; 419 60 ;
Abstract
There are disclosed a surface sintered alloy with a burnt surface, comprising 75 to 95% by weight of a hard phase containing Ti, C and N as the essential components and otherwise comprising at least one of Zr, Hf, V, Nb, Ta, Cr, Mo and W and the balance of the alloy comprising a binder phase composed mainly of Co and/or Ni and inevitable impurities, wherein the sintered alloy satisfies at least one condition selected from the group consisting of the following (1) to (3):