Osamu Tanaka

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Decorative article having black hard coating film
- Patent number 9,790,592
- Issue date Oct 17, 2017
- Citizen Watch Co., Ltd
- Osamu Tanaka
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Decorative part and process for producing the same
- Patent number 8,178,222
- Issue date May 15, 2012
- Citizen Holdings Co., Ltd.
- Yukio Miya
- A44 - HABERDASHERY JEWELLERY
Information Patent Grant
Golden ornament and process for producing the same
- Patent number 7,771,836
- Issue date Aug 10, 2010
- Citizen Holdings Co., Ltd.
- Koichi Naoi
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Patents Applicationslast 30 patents

Information Patent Application
DECORATIVE ARTICLE HAVING BLACK HARD COATING FILM
- Publication number 20160053371
- Publication date Feb 25, 2016
- CITIZEN WATCH CO., LTD
- Osamu TANAKA
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Decorative Part and Process for Producing the Same
- Publication number 20100086756
- Publication date Apr 8, 2010
- CITIZEN HOLDINGS CO., LTD.
- Yukio Miya
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Golden Ornament and Process for Producing the Same
- Publication number 20090087634
- Publication date Apr 2, 2009
- CITIZEN HOLDINGS CO., LTD.
- Koichi Naoi
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...