Ryuichi Tamura

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Osaka-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Blackening treatment solution for black Cr—Co alloy plating film
- Patent number 9,920,416
- Issue date Mar 20, 2018
- OKUNO CHEMICAL INDUSTRIES CO., LTD.
- Junichi Katayama
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Patents Applicationslast 30 patents

Information Patent Application
BLACKENING TREATMENT SOLUTION FOR BLACK Cr-Co ALLOY PLATING FILM
- Publication number 20150090368
- Publication date Apr 2, 2015
- OKUNO CHEMICAL INDUSTRIES CO., LTD.
- Junichi Katayama
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR