Hiroaki Sakai

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Osaka-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Composition for blackening copper-based or silver-based metals
- Patent number 10,184,186
- Issue date Jan 22, 2019
- OKUNO CHEMICAL INDUSTRIES CO., LTD.
- Azusa Kita
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Patents Applicationslast 30 patents

Information Patent Application
COMPOSITION FOR BLACKENING COPPER-BASED OR SILVER-BASED METALS
- Publication number 20170073818
- Publication date Mar 16, 2017
- OKUNO CHEMICAL INDUSTRIES CO., LTD.
- Azusa Kita
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...