Kouji Kishida

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Sunto-gun, JP

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Patents Grantslast 30 patents

Information Patent Grant
Aromatic polycarbonate and electrophotographic photosensitive mediu...
- Patent number 6,018,014
- Issue date Jan 25, 2000
- Ricoh Company, Ltd.
- Kazukiyo Nagai
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Aromatic polycarbonate and electrophotographic photosensitive mediu...
- Patent number 5,840,454
- Issue date Nov 24, 1998
- Ricoh Company, Ltd.
- Kazukiyo Nagai
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Electrophotographic photoconductor and aromatic polycarbonate resin...
- Patent number 5,723,243
- Issue date Mar 3, 1998
- Ricoh Company, Ltd.
- Masaomi Sasaki
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY