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.

Date of Patent:
Jan. 27, 2026

Filed:

Mar. 22, 2023
Applicant:

Seiko Epson Corporation, Tokyo, JP;

Inventor:

Takeo Funakawa, Chino, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G04B 45/02 (2006.01); G04B 13/02 (2006.01); G04B 19/04 (2006.01); G04B 19/12 (2006.01);
U.S. Cl.
CPC ...
G04B 45/02 (2013.01); G04B 13/02 (2013.01); G04B 19/04 (2013.01); G04B 19/12 (2013.01);
Abstract

A timepiece component includes a base material including silicon as a main component, and a light reflecting layer formed on the base material and including a first silicon oxide layer, a silicon layer, and a second silicon oxide layer stacked in this order, when the light reflecting layer is viewed in plan view, the light reflecting layer includes a first region and a second region, and at least one of the thicknesses of the first silicon oxide layer in the first region and the second region and the thicknesses of the second silicon oxide layer in the first region and the second region is set such that the thicknesses are different from each other.


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