Hiroshi Ohsawa

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Magnetic recording medium and production process thereof
- Patent number 7,087,325
- Issue date Aug 8, 2006
- Showa Denko Kabushiki Kaisha
- Hiroshi Kanazawa
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Magnetic recording medium, production process thereof, magnetic rec...
- Patent number 6,727,010
- Issue date Apr 27, 2004
- Showa Denko Kabushiki Kaisha
- Kenzo Hanawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium and process for producing same
- Patent number 6,132,651
- Issue date Oct 17, 2000
- Showa Denko K.K.
- Hiroshi Ohsawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording medium and process for producing same
- Patent number 5,973,894
- Issue date Oct 26, 1999
- Showa Denko Kabushiki Kaisha
- Hiroshi Ohsawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Process for producing magnetic recording medium
- Patent number 5,863,473
- Issue date Jan 26, 1999
- Showa Denko Kabushiki Kaisha
- Hiroshi Ohsawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Process for producing magnetic recording medium
- Patent number 5,582,878
- Issue date Dec 10, 1996
- Showa Denko Kabushiki Kaisha
- Shin-ichi Ogawa
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Magnetic recording medium and production process thereof
- Publication number 20040050688
- Publication date Mar 18, 2004
- Showa Denko K.K.
- Hiroshi Kanazawa
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
Magnetic recording medium, production process thereof, magnetic rec...
- Publication number 20020122960
- Publication date Sep 5, 2002
- Showa Denko K.K.
- Kenzo Hanawa
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording medium, production process thereof, magnetic rec...
- Publication number 20020076579
- Publication date Jun 20, 2002
- SHOWA DENKO KABUSHIKI KAISHA
- Kenzo Hanawa
- G11 - INFORMATION STORAGE