Akira Katayama

Person

Tagata-gun, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Electrophotographic photoconductor and aromatic polycarbonate resin...
- Patent number 6,194,535
- Issue date Feb 27, 2001
- Ricoh Company, Ltd.
- Akira Katayama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Electrophotographic photoconductor and aromatic polycarbonate resin...
- Patent number 6,191,249
- Issue date Feb 20, 2001
- Ricoh Company, Ltd.
- Chiaki Tanaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photoconductor and aromatic polycarbonate resin...
- Patent number 6,130,310
- Issue date Oct 10, 2000
- Ricoh Company, Ltd.
- Akira Katayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photoconductor and aromatic polycarbonate resin...
- Patent number 6,069,224
- Issue date May 30, 2000
- Ricoh Company, Ltd.
- Chihaya Adachi
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Electrophotographic photoconductor and aromatic polycarbonate resin...
- Patent number 6,066,428
- Issue date May 23, 2000
- Ricoh Company, Ltd.
- Akira Katayama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Electrophotographic photoconductor and aromatic polycarbonate resin...
- Patent number 6,045,959
- Issue date Apr 4, 2000
- Ricoh Company, Ltd.
- Akira Katayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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
Electrophotographic photoconductor and aromatic polycarbonate resin...
- Patent number 5,942,363
- Issue date Aug 24, 1999
- Ricoh Company, Ltd.
- Chiaki Tanaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photoconductor and aromatic polycarbonate resin...
- Patent number 5,910,561
- Issue date Jun 8, 1999
- Ricoh Company, Ltd.
- Chihaya Adachi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photoconductor and aromatic polycarbonate resin...
- Patent number 5,846,680
- Issue date Dec 8, 1998
- Ricoh Company, Ltd.
- Chihaya Adachi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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 5,789,128
- Issue date Aug 4, 1998
- Ricoh Company, Ltd.
- Chihaya Adachi
- 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

Akira Katayama

Person

Patents Grantslast 30 patents

Electrophotographic photoconductor and aromatic polycarbonate resin...

Electrophotographic photoconductor and aromatic polycarbonate resin...

Electrophotographic photoconductor and aromatic polycarbonate resin...

Electrophotographic photoconductor and aromatic polycarbonate resin...

Electrophotographic photoconductor and aromatic polycarbonate resin...

Electrophotographic photoconductor and aromatic polycarbonate resin...

Aromatic polycarbonate and electrophotographic photosensitive mediu...

Electrophotographic photoconductor and aromatic polycarbonate resin...

Electrophotographic photoconductor and aromatic polycarbonate resin...

Electrophotographic photoconductor and aromatic polycarbonate resin...

Aromatic polycarbonate and electrophotographic photosensitive mediu...

Electrophotographic photoconductor and aromatic polycarbonate resin...

Electrophotographic photoconductor and aromatic polycarbonate resin...