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:
Sep. 14, 2021
Filed:
Aug. 28, 2018
Nippon Steel Corporation, Tokyo, JP;
Casio Computer Co., Ltd., Tokyo, JP;
Genki Tsukamoto, Tokyo, JP;
Kazuhiro Takahashi, Tokyo, JP;
Hideto Seto, Tokyo, JP;
Naoki Okamura, Tokyo, JP;
Junichi Sato, Tokyo, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
CASIO COMPUTER CO., LTD., Tokyo, JP;
Abstract
A watch part containing a titanium alloy, the titanium alloy, in mass %, includes: Al: 1.0 to 3.5%; Fe: 0.1 to 0.4%; O: 0.00 to 0.15%; C: 0.00 to 0.10%; Sn: 0.00 to 0.20%; Si: 0.00 to 0.15%; and the balance: Ti and impurities, an average grain diameter of α phase crystal grains is 15.0 μm or less, an average aspect ratio of the α phase crystal grains is 1.0 or more and 3.0 or less, and a coefficient of variation of a number density of β-phase crystal grains distributed in the α phase is 0.30 or less.