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Masashi Oshima
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Kanagawa, JP
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Patents Grants
last 30 patents
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Patent Grant
Protective semiconductor device for secondary cell
Patent number
9,276,398
Issue date
Mar 1, 2016
Ricoh Company, Ltd.
Masashi Oshima
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Signal transmitting-receiving control circuit and secondary battery...
Patent number
9,136,847
Issue date
Sep 15, 2015
RICOH ELECTRONIC DEVICES CO., LTD.
Masashi Oshima
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Semiconductor device with a fuse
Patent number
8,426,942
Issue date
Apr 23, 2013
Ricoh Company, Ltd.
Masashi Oshima
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Semiconductor device
Patent number
8,217,491
Issue date
Jul 10, 2012
Ricoh Company, Ltd.
Masashi Oshima
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
PROTECTIVE SEMICONDUCTOR DEVICE FOR SECONDARY CELL
Publication number
20130242446
Publication date
Sep 19, 2013
RICOH COMPANY, LTD.
Masashi Oshima
G01 - MEASURING TESTING
Information
Patent Application
CHARGE CONTROL CIRCUIT AND BATTERY DEVICE
Publication number
20130241471
Publication date
Sep 19, 2013
RICOH COMPANY, LTD.
Kuniaki ARAI
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
SEMICONDUCTOR DEVICE
Publication number
20110079873
Publication date
Apr 7, 2011
RICOH COMPANY, LTD.
Masashi OSHIMA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
SEMICONDUCTOR DEVICE
Publication number
20110018092
Publication date
Jan 27, 2011
RICOH COMPANY, LTD.
Masashi Oshima
H01 - BASIC ELECTRIC ELEMENTS