Watch component, watch movement and watch

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11927916
APP PUB NO 20200292991A1
SERIAL NO

16817781

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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For example, an escape gear wheel part as a watch component includes a base member including a first surface and a second surface opposite the first surface, the base member being mainly composed of silicon, and a light reflecting layer provided at the first surface of the base member, the light reflecting layer having a three-layer structure in which a first silicon oxide layer, a silicon layer, and a second silicon oxide layer are layered in this order.

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Patent Owner(s)

Patent OwnerAddress
SEIKO EPSON CORPORATIONTOKYO

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Miyashita, Kazuyuki Shiojiri, JP 16 474

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