Toshiyuki Okuma

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Hot-dip Al—Zn—Mg—Si coated steel sheet and method of producing same
- Patent number 10,662,516
- Issue date May 26, 2020
- JFE Steel Corporation
- Toshihiko Ooi
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Surface-treated steel sheet and method for manufacturing the same
- Patent number 7,842,400
- Issue date Nov 30, 2010
- JFE Steel Corporation
- Takafumi Yamaji
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Zinc-plated steel plate having resin coating film
- Patent number 5,496,652
- Issue date Mar 5, 1996
- NKK Corporation
- Kenichi Sasaki
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Zinciferous plated steel sheet excellent in press-formability and c...
- Patent number 5,393,605
- Issue date Feb 28, 1995
- NKK Corporation
- Tatsuya Miyoshi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

Information Patent Application
HOT-DIP Al-Zn-Mg-Si COATED STEEL SHEET AND METHOD OF PRODUCING SAME
- Publication number 20180051366
- Publication date Feb 22, 2018
- JFE STEEL CORPORATION
- Toshihiko OOI
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
HOT-DIP Al-Zn ALLOY COATED STEEL SHEET AND METHOD FOR PRODUCING SAME
- Publication number 20150337428
- Publication date Nov 26, 2015
- JFE STEEL CORPORATION
- Toshihiko OOI
- B32 - LAYERED PRODUCTS
Information Patent Application
Surface-treated steel sheet and method for producing same
- Publication number 20060182988
- Publication date Aug 17, 2006
- Takafumi Yamaji
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...