Masato Otsuka

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Amagasaki-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Stainless steel oil feeding pipe
- Patent number 6,851,455
- Issue date Feb 8, 2005
- Nisshin Steel Co., Ltd.
- Masato Otsuka
- C21 - METALLURGY OF IRON
Information Patent Grant
Soft stainless steel sheet excellent in workability
- Patent number 6,723,181
- Issue date Apr 20, 2004
- Nisshin Steel Co., Ltd.
- Hanji Ishikawa
- C21 - METALLURGY OF IRON
Information Patent Grant
Method of manufacturing a metal pipe with an eccentrically expanded...
- Patent number 6,581,433
- Issue date Jun 24, 2003
- Nisshin Steel Co., Ltd.
- Masato Otsuka
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
Stainless steel oil feeding pipe
- Publication number 20030183292
- Publication date Oct 2, 2003
- Masato Otsuka
- C21 - METALLURGY OF IRON
Information Patent Application
Soft stainless steel sheet excellent in workability
- Publication number 20030102058
- Publication date Jun 5, 2003
- Nisshin Steel Co., Ltd.
- Hanji Ishikawa
- C21 - METALLURGY OF IRON
Information Patent Application
Method of manufacturing a metal pipe with an eccentrically expanded...
- Publication number 20020073759
- Publication date Jun 20, 2002
- NISSHIN STEEL CO., LTD.
- Masato Otsuka
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...