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:
Dec. 23, 1980
Filed:
Dec. 11, 1978
Applicant:
Inventors:
Kenji Aihara, Amagasaki, JP;
Masashi Takahashi, Amagasaki, JP;
Assignee:
Sumitomo Metal Industries Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
7512 / ; 7512 / ; 7512 / ; 7512 / ; 7512 / ; 7512 / ; 7512 / ; 7512 / ; 7512 / ; 75124 ; 75125 ; 7512 / ; 7512 / ; 7512 / ; 7512 / ; 7512 / ; 7512 / ; 7512 / ;
Abstract
A nonmagnetic alloy steel containing by weight 5 to 30% Mn and 0.005 to 0.5% N (nitrogen), satisfying the condition that 100/9(C%+N%)+2(Mn%+Cu%) is more than 25% and containing at least one element to improve the machinability of the steel. Since the steel contains no Ni, the steel is inexpensive and can be used for bars for reinforcing concrete and bolts for civil engineering works and buildings.