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. 22, 1979
Filed:
Nov. 09, 1976
Applicant:
Inventors:
Kazumi Shimotori, Kawasaki, JP;
Itaru Watanabe, Yokohama, JP;
Masako Nakahashi, Tokyo, JP;
Shuichi Komatsu, Yokohama, JP;
Assignee:
Tokyo Shibaura Electric Co., Ltd., Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
C22C / ;
U.S. Cl.
CPC ...
148 325 ; 58 8 / ; 75171 ; 148162 ;
Abstract
A watch case made of an alloy consisting essentially of 30 to 45% by weight of Cr, 2.5 to 5.0% by weight of Al and the balance essentially Ni, said alloy having been subjected to an aging treatment. The watch case is high in hardness and corrosion resistance and presents a good mirror-like surface.