Tadashi Sakuma

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Sakai, JP

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Patents Grantslast 30 patents

Information Patent Grant
Drum unit and earth plate used in the drum unit
- Patent number 5,943,527
- Issue date Aug 24, 1999
- Mita Industrial Co., Ltd.
- Nobuyuki Kashiwagi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Naphthylenediamine derivative and electrophotosensitive material us...
- Patent number 5,830,615
- Issue date Nov 3, 1998
- Mita Industrial Co., Ltd.
- Eiichi Miyamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Naphthylenediamine derivative
- Patent number 5,767,315
- Issue date Jun 16, 1998
- Mita Industrial Co., Ltd.
- Eiichi Miyamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Electrophotographic organic photosensitive material with diphenoqui...
- Patent number 5,324,610
- Issue date Jun 28, 1994
- Mita Industrial Co., Ltd.
- Masashi Tanaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Laminate type photosensitive material for electrophotography
- Patent number 5,192,633
- Issue date Mar 9, 1993
- Mita Industrial Co., Ltd.
- Hiroaki Iwasaki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY