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:
Jun. 28, 1977
Filed:
Dec. 16, 1975
Applicant:
Inventors:
Hideki Nakamura, Yasugi, JA;
Kingo Kiyonaga, Yonago, JA;
Assignee:
Hitachi Metals, Ltd., , JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
75240 ; 75 / ; 75122 ; 7512 / ; 7512 / ; 7512 / ; 7512 / ; 7512 / ; 7512 / ; 7512 / ; 7513 / ;
Abstract
A carbide enriched high speed tool steel having good toughness, excellent wear resistance and excellent cutting endurance which by weight consists essentially of 0.62 - 3.95 % of carbon, totally 24 - 50 % of tungsten and twice amount of molybdenum, 3.0 - 5.0 % of chromium, 1.0 - 10.0 % of vanadium, 5 - 15 % of cobalt and the balance consisting essentially of iron and impurities and which is produced by powder metallurgical process.