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:
May. 23, 1995
Filed:
Aug. 04, 1994
Applicant:
Inventors:
Akira Yoshino, Osakasayama, JP;
Masaaki Tahara, Takatsuki, JP;
Haruo Senbokuya, Tondabayashi, JP;
Kenzo Kitano, Kawachinagano, JP;
Teruo Minato, Hashimoto, JP;
Assignee:
Daidousanso Co., Ltd., Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
148318 ; 148230 ; 148317 ; 411378 ; 411902 ; 411903 ; 428626 ; 428655 ;
Abstract
The surface layer of a hard austenitic stainless steel screw is formed as nitrided layer and then is covered by a plating coat or a resin coat to give properties such as shortening the boring time as well as heightening the surface hardness of the screw itself.