Masafumi Kumano

Person

Miyagi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Crystal growth apparatus
- Patent number 8,623,138
- Issue date Jan 7, 2014
- Ricoh Company, Ltd.
- Seiji Sarayama
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Crystal growth method
- Patent number 7,531,038
- Issue date May 12, 2009
- Ricoh Company, Ltd.
- Seiji Sarayama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Crystal growth method, crystal growth apparatus, group-III nitride...
- Patent number 7,001,457
- Issue date Feb 21, 2006
- Ricoh Company, Ltd.
- Seiji Sarayama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Apparatus for zone melting recrystallization of thin semiconductor...
- Patent number 5,304,357
- Issue date Apr 19, 1994
- Ricoh Co. Ltd.
- Yukito Sato
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Photoconductive material and photosensor employing the photoconduct...
- Patent number 5,283,207
- Issue date Feb 1, 1994
- Ricoh Company, Ltd.
- Koichi Haga
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Amorphous photoconductive material and photosensor employing the ph...
- Patent number 5,155,567
- Issue date Oct 13, 1992
- Ricoh Company, Ltd.
- Koichi Haga
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Total contact type image sensor
- Patent number 5,144,458
- Issue date Sep 1, 1992
- Ricoh Company, Ltd.
- Kazuhiko Adachi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Amorphous silicon photoelectric device
- Patent number 5,140,397
- Issue date Aug 18, 1992
- Ricoh Company, Ltd.
- Koichi Haga
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Thin film semiconductor and process for producing the same
- Patent number 5,108,843
- Issue date Apr 28, 1992
- Ricoh Company, Ltd.
- Kouichi Ohtaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Amorphous silicon photosensor
- Patent number 5,053,844
- Issue date Oct 1, 1991
- Ricoh Company, Ltd.
- Akishige Murakami
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Perpendicular magnetic recording medium
- Patent number 4,966,821
- Issue date Oct 30, 1990
- Ricoh Company, Ltd.
- Ikue Kawashima
- G11 - INFORMATION STORAGE
Information Patent Grant
Contact type image sensor
- Patent number 4,943,839
- Issue date Jul 24, 1990
- Ricoh Company, Ltd.
- Masafumi Kumano
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electrophotographic element with silicide treated porous Al.sub.2 O...
- Patent number 4,792,510
- Issue date Dec 20, 1988
- Ricoh Co., Ltd.
- Masafumi Kumano
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photosensitive material for electrophotography
- Patent number 4,734,346
- Issue date Mar 29, 1988
- Ricoh Co., Ltd.
- Masafumi Kumano
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Vascular anastomosis apparatus
- Patent number 4,566,453
- Issue date Jan 28, 1986
- Tohoku Ricoh Co., Ltd.
- Masafumi Kumano
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents

Information Patent Application
CRYSTAL GROWTH METHOD, CRYSTAL GROWTH APPARATUS, GROUP-III NITRIDE...
- Publication number 20090120354
- Publication date May 14, 2009
- Seiji Sarayama
- C30 - CRYSTAL GROWTH
Information Patent Application
Crystal growth method, crystal growth apparatus, group-III nitride...
- Publication number 20060130739
- Publication date Jun 22, 2006
- Seiji Sarayama
- C30 - CRYSTAL GROWTH
Information Patent Application
Crystal growth method, crystal growth apparatus, group-III nitride...
- Publication number 20020175338
- Publication date Nov 28, 2002
- Seiji Sarayama
- C30 - CRYSTAL GROWTH

Masafumi Kumano

Person

Patents Grantslast 30 patents

Crystal growth apparatus

Crystal growth method

Crystal growth method, crystal growth apparatus, group-III nitride...

Apparatus for zone melting recrystallization of thin semiconductor...

Photoconductive material and photosensor employing the photoconduct...

Amorphous photoconductive material and photosensor employing the ph...

Total contact type image sensor

Amorphous silicon photoelectric device

Thin film semiconductor and process for producing the same

Amorphous silicon photosensor

Perpendicular magnetic recording medium

Contact type image sensor

Electrophotographic element with silicide treated porous Al.sub.2 O...

Photosensitive material for electrophotography

Vascular anastomosis apparatus

Patents Applicationslast 30 patents

CRYSTAL GROWTH METHOD, CRYSTAL GROWTH APPARATUS, GROUP-III NITRIDE...

Crystal growth method, crystal growth apparatus, group-III nitride...

Crystal growth method, crystal growth apparatus, group-III nitride...