Keiji Nakatsu

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Amagasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Laser power measuring jig for optical disk unit
- Patent number 5,264,911
- Issue date Nov 23, 1993
- Mitsubishi Electric Corporation
- Kazuhiko Nakane
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disk drive apparatus having counter disable at seek start-up
- Patent number 4,955,009
- Issue date Sep 4, 1990
- Mitsubishi Denki Kabushiki Kaisha
- Keiji Nakatsu
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disk reading head controller
- Patent number 4,901,299
- Issue date Feb 13, 1990
- Mitsubishi Denki Kabushiki Kaisha
- Keiji Nakatsu
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical disk drive device for positioning a carriage to a retract p...
- Patent number 4,887,254
- Issue date Dec 12, 1989
- Mitsubishi Denki Kabushiki Kaisha
- Keiji Nakatsu
- G11 - INFORMATION STORAGE
Information Patent Grant
Device for driving and controlling optical head for use in optical...
- Patent number 4,835,752
- Issue date May 30, 1989
- Mitsubishi Denki Kabushiki Kaisha
- Keiji Nakatsu
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for controlling relative movement of an optical head to a...
- Patent number 4,788,421
- Issue date Nov 29, 1988
- Mitsubishi Denki Kabushiki Kaisha
- Masaharu Ogawa
- G11 - INFORMATION STORAGE