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:
Jul. 08, 2008
Filed:
Aug. 30, 2002
Applicants:
Yoshitsugu Shibuya, Toda, JP;
Junji Satoh, Kawagoe, JP;
Shizue Ito, Nishitokyo, JP;
Inventors:
Assignee:
Citizen Holdings Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A soft metal and a decorative article of wristwatch are produced by forming, on the surface of a soft metal article (), a hard layer () containing zirconium and molybdenum, or containing zirconium, molybdenum and further an additive element constituted of at least one or more elements selected from niobium, tantalum, and titanium. It is preferable that the content of molybdenum constituting the hard layer () is about 30 to 75 wt %, or that the content of molybdenum is about 25 to 65 wt % and the total content of the additive elements is about 25 wt % or less.