Kohkoku Ri

Person

Shizuoka, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Aromatic polycarbonate resin, electrophotographic photoconductor, p...
- Patent number 7,071,285
- Issue date Jul 4, 2006
- Ricoh Company, Ltd.
- Shinichi Kawamura
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
AROMATIC BLOCK POLYCARBONATE RESIN, DIPHENOL COMPOUND FOR PREPARATI...
- Patent number 6,919,419
- Issue date Jul 19, 2005
- Ricoh Company Ltd.
- Kohkoku Ri
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Aromatic polycarbonate resin, electrophotographic photoconductor, p...
- Patent number 6,790,571
- Issue date Sep 14, 2004
- Ricoh Company, Ltd.
- Shinichi Kawamura
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Diphenol compound, aromatic polycarbonate and electrophotoconductiv...
- Patent number 6,664,361
- Issue date Dec 16, 2003
- Ricoh Company, Ltd.
- Masaomi Sasaki
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
AROMATIC BLOCK POLYCARBONATE RESIN, DIPHENOL COMPOUND FOR PREPARATI...
- Patent number 6,576,386
- Issue date Jun 10, 2003
- Ricoh Company, Ltd.
- Kohkoku Ri
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Electrophotographic photoconductor and method of producing aromatic...
- Patent number 6,486,293
- Issue date Nov 26, 2002
- Ricoh Company, Ltd.
- Kohkoku Ri
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Image bearing material, electrophotographic photoreceptor using the...
- Patent number 6,444,387
- Issue date Sep 3, 2002
- Ricoh Company Limited
- Kohkoku Ri
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photoconductor and aromatic polycarbonate resin...
- Patent number 6,303,736
- Issue date Oct 16, 2001
- Ricoh Company, Ltd.
- Shinichi Kawamura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photoconductor, and process cartridge and image...
- Patent number 6,210,848
- Issue date Apr 3, 2001
- Ricoh Company, Ltd.
- Kazukiyo Nagai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photoconductor and aromatic polycarbonate resin...
- Patent number 6,187,494
- Issue date Feb 13, 2001
- Ricoh Company, Ltd.
- Shinichi Kawamura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photoconductor and method of producing aromatic...
- Patent number 6,187,492
- Issue date Feb 13, 2001
- Ricoh Company, Ltd.
- Kohkoku Ri
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Aromatic polycarbonate resin, electrophotographic photoconductor, p...
- Publication number 20050003287
- Publication date Jan 6, 2005
- Ricoh Company, Ltd.
- Shinichi Kawamura
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Aromatic block polycarbonate resin, diphenol compound for preparati...
- Publication number 20040002574
- Publication date Jan 1, 2004
- RICOH COMPANY, LTD.
- Kohkoku Ri
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Diphenol compound, aromatic polycarbonate and electrophotoconductiv...
- Publication number 20020147278
- Publication date Oct 10, 2002
- Masaomi Sasaki
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Aromatic polycarbonate resin, electrophotographic photoconductor, p...
- Publication number 20020098430
- Publication date Jul 25, 2002
- Ricoh Company, Ltd.
- Shinichi Kawamura
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Image bearing material, electrophotographic photoreceptor using the...
- Publication number 20010012594
- Publication date Aug 9, 2001
- RICOH COMPANY LIMITED
- Kohkoku Ri
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Person

Patents Grantslast 30 patents

Aromatic polycarbonate resin, electrophotographic photoconductor, p...

AROMATIC BLOCK POLYCARBONATE RESIN, DIPHENOL COMPOUND FOR PREPARATI...

Aromatic polycarbonate resin, electrophotographic photoconductor, p...

Diphenol compound, aromatic polycarbonate and electrophotoconductiv...

AROMATIC BLOCK POLYCARBONATE RESIN, DIPHENOL COMPOUND FOR PREPARATI...

Electrophotographic photoconductor and method of producing aromatic...

Image bearing material, electrophotographic photoreceptor using the...

Electrophotographic photoconductor and aromatic polycarbonate resin...

Electrophotographic photoconductor, and process cartridge and image...

Electrophotographic photoconductor and aromatic polycarbonate resin...

Electrophotographic photoconductor and method of producing aromatic...

Patents Applicationslast 30 patents

Aromatic polycarbonate resin, electrophotographic photoconductor, p...

Aromatic block polycarbonate resin, diphenol compound for preparati...

Diphenol compound, aromatic polycarbonate and electrophotoconductiv...

Aromatic polycarbonate resin, electrophotographic photoconductor, p...

Image bearing material, electrophotographic photoreceptor using the...