Megumi Kawahara

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Control system, communication system, control method, and recording...
- Patent number 10,616,417
- Issue date Apr 7, 2020
- Ricoh Company, Ltd.
- Megumi Kawahara
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Cyclopentadiene derivative compounds and electrophotographic photoc...
- Patent number 5,750,762
- Issue date May 12, 1998
- Ricoh Company, Ltd.
- Megumi Kawahara
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
cyclopentadiene derivative compounds and electrophotographic photoc...
- Patent number 5,700,614
- Issue date Dec 23, 1997
- Ricoh Company, Ltd.
- Megumi Kawahara
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Tricyclic pyrazine compound and electrophotographic photoconductor...
- Patent number 5,618,935
- Issue date Apr 8, 1997
- Ricoh Company, Ltd.
- Masayuki Shoshi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Electrophotographic photoconductor containing disazo and trisazo pi...
- Patent number 5,578,405
- Issue date Nov 26, 1996
- Ricoh Company
- Takaaki Ikegami
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Positively-chargeable single-layered type electrophotographic photo...
- Patent number 5,492,784
- Issue date Feb 20, 1996
- Ricoh Company, Ltd.
- Masao Yoshikawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photoconductor
- Patent number 5,486,438
- Issue date Jan 23, 1996
- Ricoh Company, Ltd.
- Masayuki Shoshi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Pyrazine compound and electrophotographic photoconductor comprising...
- Patent number 5,460,909
- Issue date Oct 24, 1995
- Ricoh Company, Ltd.
- Masayuki Shoshi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method and apparatus for forming image on a member with image formi...
- Patent number 5,400,065
- Issue date Mar 21, 1995
- Ricoh Company, Ltd.
- Hidenori Tomono
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Electrophotographic photoconductor
- Patent number 5,350,653
- Issue date Sep 27, 1994
- Ricoh Company, Ltd.
- Masayuki Shoshi
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
CONTROL SYSTEM, COMMUNICATION SYSTEM, CONTROL METHOD, AND RECORDING...
- Publication number 20170085717
- Publication date Mar 23, 2017
- Megumi KAWAHARA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Megumi Kawahara

Person

Patents Grantslast 30 patents

Control system, communication system, control method, and recording...

Cyclopentadiene derivative compounds and electrophotographic photoc...

cyclopentadiene derivative compounds and electrophotographic photoc...

Tricyclic pyrazine compound and electrophotographic photoconductor...

Electrophotographic photoconductor containing disazo and trisazo pi...

Positively-chargeable single-layered type electrophotographic photo...

Electrophotographic photoconductor

Pyrazine compound and electrophotographic photoconductor comprising...

Method and apparatus for forming image on a member with image formi...

Electrophotographic photoconductor

Patents Applicationslast 30 patents

CONTROL SYSTEM, COMMUNICATION SYSTEM, CONTROL METHOD, AND RECORDING...