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:
Jul. 21, 1981
Filed:
Dec. 28, 1978
Naoji Fujimori, Itami, JP;
Masaaki Tobioka, Itami, JP;
Tsuyoshi Asai, Itami, JP;
Takaharu Yamamoto, Itami, JP;
Masaya Miyake, Itami, JP;
Abstract
The invention relates to a sintered hard metal having a high wear resistance and heat resistance as material for cutting tools and wear resistant tools and the method for producing the same. The sintered hard metal has a hard phase comprising a phase having a B-1 type crystal structure containing more than one kind of IVa, Va and VIa group metals in the Periodic Table and also the elements, carbon, nitrogen and oxygen and a WC phase, the hard phase and a bonding phase chiefly consisting of a ferrous metal which is sintered by a powder metallurgy technique, whereas the oxygen in particular is added thereto making it possible to obtain a sintered hard metal having said excellent properties.