Takashi Koyama

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Projector
- Patent number D870798
- Issue date Dec 24, 2019
- PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Keiji Yuyama
- D16 - Photography and optical equipment
Information Patent Grant
Charging member, electrophotographic apparatus and charging method...
- Patent number 5,669,047
- Issue date Sep 16, 1997
- Canon Kabushiki Kaisha
- Masami Okuda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Polyamide, electrophotographic photosensitive member employing the...
- Patent number 5,663,283
- Issue date Sep 2, 1997
- Canon Kabushiki Kaisha
- Teigo Sakakibara
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyamide, electrophotographic photosensitive member employing the...
- Patent number 5,419,993
- Issue date May 30, 1995
- Canon Kabushiki Kaisha
- Teigo Sakakibara
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Electrophotographic photosensitive member having an intermediate la...
- Patent number 5,362,587
- Issue date Nov 8, 1994
- Canon Kabushiki Kaisha
- Yuichi Hashimoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photosensitive member and apparatus using same
- Patent number 5,296,322
- Issue date Mar 22, 1994
- Canon Kabushiki Kaisha
- Takashi Koyama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Electrophotographic photosensitive member with polyether polyols-po...
- Patent number 5,294,508
- Issue date Mar 15, 1994
- Canon Kabushiki Kaisha
- Takashi Koyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photosensitive member and apparatus using same
- Patent number 5,246,806
- Issue date Sep 21, 1993
- Canon Kabushiki Kaisha
- Takashi Koyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic sensitive medium
- Patent number 5,236,796
- Issue date Aug 17, 1993
- Canon Kabushiki Kaisha
- Takashi Koyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image holder member having resin layer of metal-coated fine resin p...
- Patent number 5,190,837
- Issue date Mar 2, 1993
- Canon Kabushiki Kaisha
- Kiyoshi Sakai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photosensitive member for electrophotography
- Patent number 5,130,216
- Issue date Jul 14, 1992
- Canon Kabushiki Kaisha
- Takashi Koyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photosensitive member having an improved interm...
- Patent number 5,104,757
- Issue date Apr 14, 1992
- Canon Kaubshiki Kaisha
- Takashi Koyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photosensitive member with electrical conductor...
- Patent number 5,079,117
- Issue date Jan 7, 1992
- Canon Kabushiki Kaisha
- Takashi Koyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photosensitive member with grafted polyamide in...
- Patent number 5,071,723
- Issue date Dec 10, 1991
- Canon Kabushiki Kaisha
- Takashi Koyama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Charging member and electrophotographic apparatus using the same
- Patent number 5,017,965
- Issue date May 21, 1991
- Canon Kabushiki Kaisha
- Yuichi Hashimoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic photosensitive member and a method of preparing it
- Patent number 4,975,352
- Issue date Dec 4, 1990
- Canon Kabushiki Kaisha
- Hideki Anayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process for preparing dispersion liquid containing organic, photoco...
- Patent number 4,895,782
- Issue date Jan 23, 1990
- Canon Kabushiki Kaisha
- Takashi Koyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
SETTLEMENT PAYMENT DEVICE AND UNMANNED STORE SYSTEM
- Publication number 20220188796
- Publication date Jun 16, 2022
- Panasonic Intellectual Property Management Co., Ltd.
- Akihiro UEKI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
CLEARING AND SETTLEMENT DEVICE, AND UNMANNED STORE SYSTEM
- Publication number 20220044221
- Publication date Feb 10, 2022
- Panasonic Intellectual Property Management Co., Ltd.
- Akihiro UEKI
- G06 - COMPUTING CALCULATING COUNTING

Takashi Koyama

Person

Patents Grantslast 30 patents

Projector

Charging member, electrophotographic apparatus and charging method...

Polyamide, electrophotographic photosensitive member employing the...

Polyamide, electrophotographic photosensitive member employing the...

Electrophotographic photosensitive member having an intermediate la...

Electrophotographic photosensitive member and apparatus using same

Electrophotographic photosensitive member with polyether polyols-po...

Electrophotographic photosensitive member and apparatus using same

Electrophotographic sensitive medium

Image holder member having resin layer of metal-coated fine resin p...

Photosensitive member for electrophotography

Electrophotographic photosensitive member having an improved interm...

Electrophotographic photosensitive member with electrical conductor...

Electrophotographic photosensitive member with grafted polyamide in...

Charging member and electrophotographic apparatus using the same

Electrophotographic photosensitive member and a method of preparing it

Process for preparing dispersion liquid containing organic, photoco...

Patents Applicationslast 30 patents

SETTLEMENT PAYMENT DEVICE AND UNMANNED STORE SYSTEM

CLEARING AND SETTLEMENT DEVICE, AND UNMANNED STORE SYSTEM