Tsukasa Ogawa

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical recording apparatus and method for adding information in a...
- Patent number 5,402,409
- Issue date Mar 28, 1995
- Hitachi Koki Co., Ltd.
- Keiji Kataoka
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Device for measuring surface potentials at photosensitive body and...
- Patent number 5,182,596
- Issue date Jan 26, 1993
- Hitachi Koki Co., Ltd.
- Takashi Nakazawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Method and apparatus for detecting print-termination in line printer
- Patent number 5,150,648
- Issue date Sep 29, 1992
- Hitachi Koki Co., Ltd.
- Kenji Okada
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Double beam scan type optical apparatus
- Patent number 5,140,157
- Issue date Aug 18, 1992
- Hitachi Koki Co., Ltd.
- Minoru Ohshima
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS