Norifumi Yamamoto

Person

Yokohama-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Battery state control circuit, battery state control device, and ba...
- Patent number 9,755,439
- Issue date Sep 5, 2017
- Ricoh Company, Ltd.
- Norifumi Yamamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Image position detector and image forming device
- Patent number 8,774,656
- Issue date Jul 8, 2014
- Ricoh Company, Ltd.
- Masahiko Sato
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Reflective photosensor and image forming device incorporating the same
- Patent number 8,474,810
- Issue date Jul 2, 2013
- Ricoh Company, Ltd.
- Norifumi Yamamoto
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Charge/discharge protection circuit, battery pack including charge/...
- Patent number 8,212,529
- Issue date Jul 3, 2012
- Ricoh Company, Ltd.
- Norifumi Yamamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Charge/discharge protection circuit utilizing a charger connection...
- Patent number 7,772,805
- Issue date Aug 10, 2010
- Ricoh Company, Ltd.
- Norifumi Yamamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
BATTERY STATE CONTROL CIRCUIT, BATTERY STATE CONTROL DEVICE, AND BA...
- Publication number 20150236533
- Publication date Aug 20, 2015
- RICOH COMPANY, LTD.
- Norifumi Yamamoto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
BATTERY STATE CONTROL CIRCUIT, BATTERY STATE CONTROL APPARATUS, AND...
- Publication number 20150140374
- Publication date May 21, 2015
- RICOH COMPANY, LTD.
- Norifumi Yamamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
REFLECTIVE PHOTOSENSOR AND IMAGE FORMING DEVICE INCORPORATING THE SAME
- Publication number 20130001857
- Publication date Jan 3, 2013
- RICOH COMPANY, LTD.
- Norifumi Yamamoto
- G01 - MEASURING TESTING
Information Patent Application
IMAGE POSITION DETECTOR AND IMAGE FORMING DEVICE
- Publication number 20120298845
- Publication date Nov 29, 2012
- RICOH COMPANY, LTD.
- Masahiko Sato
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DENSITY SENSOR AND IMAGE FORMING APPARATUS INCLUDING THE SAME
- Publication number 20110222892
- Publication date Sep 15, 2011
- RICOH COMPANY, LTD.
- Masafumi HASHIGUCHI
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
CHARGE/DISCHARGE PROTECTION CIRCUIT, BATTERY PACK INCLUDING CHARGE/...
- Publication number 20100188044
- Publication date Jul 29, 2010
- Norifumi Yamamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
CHARGE/DISCHARGE PROTECTION CIRCUIT, BATTERY PACK EMBEDDING THE CHA...
- Publication number 20090251104
- Publication date Oct 8, 2009
- Norifumi Yamamoto
- H01 - BASIC ELECTRIC ELEMENTS

Norifumi Yamamoto

Person

Patents Grantslast 30 patents

Battery state control circuit, battery state control device, and ba...

Image position detector and image forming device

Reflective photosensor and image forming device incorporating the same

Charge/discharge protection circuit, battery pack including charge/...

Charge/discharge protection circuit utilizing a charger connection...

Patents Applicationslast 30 patents

BATTERY STATE CONTROL CIRCUIT, BATTERY STATE CONTROL DEVICE, AND BA...

BATTERY STATE CONTROL CIRCUIT, BATTERY STATE CONTROL APPARATUS, AND...

REFLECTIVE PHOTOSENSOR AND IMAGE FORMING DEVICE INCORPORATING THE SAME

IMAGE POSITION DETECTOR AND IMAGE FORMING DEVICE

DENSITY SENSOR AND IMAGE FORMING APPARATUS INCLUDING THE SAME

CHARGE/DISCHARGE PROTECTION CIRCUIT, BATTERY PACK INCLUDING CHARGE/...

CHARGE/DISCHARGE PROTECTION CIRCUIT, BATTERY PACK EMBEDDING THE CHA...