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:
Apr. 09, 1996
Filed:
Apr. 27, 1995
Applicant:
Inventors:
Masaaki Tahara, Osaka, JP;
Haruo Senbokuya, Osaka, JP;
Kenzo Kitano, Osaka, JP;
Tadashi Hayashida, Osaka, JP;
Teruo Minato, Osaka, JP;
Assignee:
Daidousanso Co., Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
148217 ; 148221 ; 148238 ;
Abstract
The present invention relates to nickel alloy products with their surfaces nitrided and hardened which are formed by pressure casting nickel alloy material, and nitrided and hardened layers are formed in surface layers. Since the nitrided and hardened surfaces of the nickel alloy products according to the invention have much better corrosion resistance than iron products have, anticorrosion treatment such as plating is not required, and rich lubricity and excellent tightening property can be obtained without having seizure and scuffing phenomena.