Hiroo Ohkawa

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Hitachi-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Magnetic film forming system
- Patent number 6,491,802
- Issue date Dec 10, 2002
- Hitachi, Ltd.
- Yasushi Ishikawa
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Magnetic film forming system
- Patent number 6,290,824
- Issue date Sep 18, 2001
- Hitachi, Ltd.
- Yasushi Ishikawa
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Laser Marking apparatus
- Patent number 5,260,542
- Issue date Nov 9, 1993
- Hitachi, Ltd.
- Kouji Ishiguro
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Laser marking system
- Patent number 5,157,235
- Issue date Oct 20, 1992
- Hitachi, Ltd.
- Kiyoshi Okumura
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
Magnetic film forming system
- Publication number 20010050224
- Publication date Dec 13, 2001
- Hitachi, Ltd.
- Yasushi Ishikawa
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...