Eiichi Ohta

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Manufacturing method of and manufacturing apparatus for metal oxide...
- Patent number 9,512,521
- Issue date Dec 6, 2016
- Ricoh Company, Ltd.
- Akira Watanabe
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Electromechanical transducer element, liquid discharge head, liquid...
- Patent number 8,960,866
- Issue date Feb 24, 2015
- Ricoh Company, Ltd.
- Osamu Machida
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Thin-film actuator, liquid ejection head, ink cartridge, and image...
- Patent number 8,585,188
- Issue date Nov 19, 2013
- Ricoh Company, Limited
- Eiichi Ohta
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Electric charging apparatus and image forming apparatus using the same
- Patent number 8,086,141
- Issue date Dec 27, 2011
- Ricoh Company, Ltd.
- Yukimichi Someya
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electron emission element, charging device, process cartridge, and...
- Patent number 7,728,503
- Issue date Jun 1, 2010
- Ricoh Company, Ltd.
- Eiichi Ohta
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Charging device, and process cartridge and image forming apparatus...
- Patent number 7,715,760
- Issue date May 11, 2010
- Ricoh Company, Ltd.
- Naomi Sugimoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Abnormal state occurrence predicting method, state deciding apparat...
- Patent number 7,554,574
- Issue date Jun 30, 2009
- Ricoh Company, Ltd.
- Hisashi Shoji
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Optical modulator, optical modulator manufacturing method, light in...
- Patent number 7,166,486
- Issue date Jan 23, 2007
- Ricoh Company, Ltd.
- Kouichi Ohtaka
- G02 - OPTICS
Information Patent Grant
OPTICAL MODULATOR, OPTICAL MODULATOR MANUFACTURING METHOD, LIGHT IN...
- Patent number 6,947,195
- Issue date Sep 20, 2005
- Ricoh Company, Ltd.
- Kouichi Ohtaka
- G02 - OPTICS
Information Patent Grant
Electrostatic ink-jet head and method of production of the same
- Patent number 6,367,914
- Issue date Apr 9, 2002
- Ricoh Company, Ltd.
- Kouichi Ohtaka
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Electrostatic typeinkjet head having a vent passage and a manufactu...
- Patent number 6,354,697
- Issue date Mar 12, 2002
- Ricoh Company, Ltd.
- Makoto Tanaka
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Electrostatic inkjet head having an accurate gap between an electro...
- Patent number 6,341,847
- Issue date Jan 29, 2002
- Ricoh Company, Ltd.
- Eiichi Ohta
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Method of driving an LCD employing combining two voltages which cha...
- Patent number 5,543,945
- Issue date Aug 6, 1996
- Ricoh Company, Ltd.
- Yuji Kimura
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Deposited multi-layer device with a plastic substrate having an ino...
- Patent number 5,319,479
- Issue date Jun 7, 1994
- Ricoh Company, Ltd.
- Katsuyuki Yamada
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Active matrix board
- Patent number 5,214,416
- Issue date May 25, 1993
- Ricoh Company, Ltd.
- Hitoshi Kondo
- G02 - OPTICS
Information Patent Grant
Active matrix-type liquid crystal display containing a horizontal M...
- Patent number 5,153,753
- Issue date Oct 6, 1992
- Ricoh Company, Ltd.
- Eiichi Ohta
- G02 - OPTICS
Information Patent Grant
MIM element with a doped hard carbon film
- Patent number 5,142,390
- Issue date Aug 25, 1992
- Ricoh Company, Ltd.
- Eiichi Ohta
- G02 - OPTICS
Information Patent Grant
Liquid crystal display
- Patent number 5,132,676
- Issue date Jul 21, 1992
- Ricoh Company, Ltd.
- Yuji Kimura
- G02 - OPTICS
Information Patent Grant
Liquid crystal display with a light blocking film of hard carbon
- Patent number 5,117,299
- Issue date May 26, 1992
- Ricoh Company, Ltd.
- Hitoshi Kondo
- G02 - OPTICS
Information Patent Grant
LCD having obliquely split or interdigitated pixels connected to MI...
- Patent number 5,101,288
- Issue date Mar 31, 1992
- Ricoh Company, Ltd.
- Eiichi Ohta
- G02 - OPTICS
Information Patent Grant
Thin film two terminal element
- Patent number 5,008,732
- Issue date Apr 16, 1991
- Ricoh Company, Ltd.
- Hitoshi Kondo
- G02 - OPTICS
Information Patent Grant
Force sensing apparatus
- Patent number 4,911,023
- Issue date Mar 27, 1990
- Ricoh Company, Ltd.
- Kohji Izumi
- G01 - MEASURING TESTING
Information Patent Grant
Force detecting device
- Patent number 4,849,730
- Issue date Jul 18, 1989
- Ricoh Company, Ltd.
- Kouji Izumi
- G01 - MEASURING TESTING
Information Patent Grant
Force sensing apparatus
- Patent number 4,836,034
- Issue date Jun 6, 1989
- Ricoh Company, Ltd.
- Kohji Izumi
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
ELECTROMECHANICAL TRANSDUCER ELEMENT, LIQUID DISCHARGE HEAD, LIQUID...
- Publication number 20130176364
- Publication date Jul 11, 2013
- RICOH COMPANY, LTD.
- Osamu Machida
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
MANUFACTURING METHOD OF AND MANUFACTURING APPARATUS FOR METAL OXIDE...
- Publication number 20120276303
- Publication date Nov 1, 2012
- Tohoku University
- Akira WATANABE
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
THIN FILM MANUFACTURING METHOD AND THIN-FILM ELEMENT
- Publication number 20120028075
- Publication date Feb 2, 2012
- Masahiro YAGI
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
THIN FILM MANUFACTURING METHOD AND THIN FILM ELEMENT
- Publication number 20110123728
- Publication date May 26, 2011
- RICOH COMPANY, LTD.
- Eiichi OHTA
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
FLUID DISCHARGE HEAD AND IMAGE FORMING APPARATUS
- Publication number 20100302323
- Publication date Dec 2, 2010
- Masahiro YAGI
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
ELECTRIC CHARGING APPARATUS AND IMAGE FORMING APPARATUS USING THE SAME
- Publication number 20100073697
- Publication date Mar 25, 2010
- Yukimichi Someya
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Charging device, and process cartridge and image forming apparatus...
- Publication number 20090116872
- Publication date May 7, 2009
- Naomi Sugimoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
ELECTRON EMISSION ELEMENT, CHARGING DEVICE, PROCESS CARTRIDGE, AND...
- Publication number 20070231010
- Publication date Oct 4, 2007
- Eiichi Ohta
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Optical modulator, optical modulator manufacturing method, light in...
- Publication number 20050264866
- Publication date Dec 1, 2005
- Kouichi Ohtaka
- G02 - OPTICS
Information Patent Application
Abnormal state occurrence predicting method, state deciding apparat...
- Publication number 20050002054
- Publication date Jan 6, 2005
- Hisashi Shoji
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Optical modulator, optical modulator manufacturing method, light in...
- Publication number 20020109899
- Publication date Aug 15, 2002
- Kouichi Ohtaka
- G02 - OPTICS

Eiichi Ohta

Person

Patents Grantslast 30 patents

Manufacturing method of and manufacturing apparatus for metal oxide...

Electromechanical transducer element, liquid discharge head, liquid...

Thin-film actuator, liquid ejection head, ink cartridge, and image...

Electric charging apparatus and image forming apparatus using the same

Electron emission element, charging device, process cartridge, and...

Charging device, and process cartridge and image forming apparatus...

Abnormal state occurrence predicting method, state deciding apparat...

Optical modulator, optical modulator manufacturing method, light in...

OPTICAL MODULATOR, OPTICAL MODULATOR MANUFACTURING METHOD, LIGHT IN...

Electrostatic ink-jet head and method of production of the same

Electrostatic typeinkjet head having a vent passage and a manufactu...

Electrostatic inkjet head having an accurate gap between an electro...

Method of driving an LCD employing combining two voltages which cha...

Deposited multi-layer device with a plastic substrate having an ino...

Active matrix board

Active matrix-type liquid crystal display containing a horizontal M...

MIM element with a doped hard carbon film

Liquid crystal display

Liquid crystal display with a light blocking film of hard carbon

LCD having obliquely split or interdigitated pixels connected to MI...

Thin film two terminal element

Force sensing apparatus

Force detecting device

Force sensing apparatus

Patents Applicationslast 30 patents

ELECTROMECHANICAL TRANSDUCER ELEMENT, LIQUID DISCHARGE HEAD, LIQUID...

MANUFACTURING METHOD OF AND MANUFACTURING APPARATUS FOR METAL OXIDE...

THIN FILM MANUFACTURING METHOD AND THIN-FILM ELEMENT

THIN FILM MANUFACTURING METHOD AND THIN FILM ELEMENT

FLUID DISCHARGE HEAD AND IMAGE FORMING APPARATUS

ELECTRIC CHARGING APPARATUS AND IMAGE FORMING APPARATUS USING THE SAME

Charging device, and process cartridge and image forming apparatus...

ELECTRON EMISSION ELEMENT, CHARGING DEVICE, PROCESS CARTRIDGE, AND...

Optical modulator, optical modulator manufacturing method, light in...

Abnormal state occurrence predicting method, state deciding apparat...

Optical modulator, optical modulator manufacturing method, light in...