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. 29, 2025
Filed:
Oct. 19, 2021
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Takeshi Sakamoto, Chino, JP;
Kazunori Hoshino, Matsumoto, JP;
Takahiro Seki, Shiojiri, JP;
Ken Wakita, Minowa, JP;
Assignee:
SEIKO EPSON CORPORATION, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G04B 19/04 (2005.12);
U.S. Cl.
CPC ...
G04B 19/042 (2012.12);
Abstract
A watch component having an oxide film formed by oxidizing a base material containing iron as a main component, an average film thickness of the oxide film is from 70 nm to 145 nm, and a variation in film thickness of the oxide film is equal to or less than 35%.