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Tomohiro Oka
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Chiba, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Zero cross detection circuit and sensor device
Patent number
10,908,193
Issue date
Feb 2, 2021
ABLIC INC.
Minoru Ariyama
G01 - MEASURING TESTING
Information
Patent Grant
Switch circuit
Patent number
9,571,094
Issue date
Feb 14, 2017
SII SEMICONDUCTOR CORPORATION
Naohiro Hiraoka
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Semiconductor device
Patent number
9,274,170
Issue date
Mar 1, 2016
Seiko Instruments Inc.
Tomohiro Oka
G01 - MEASURING TESTING
Information
Patent Grant
Boosting circuit
Patent number
9,054,683
Issue date
Jun 9, 2015
Seiko Instruments Inc.
Masaya Murata
G11 - INFORMATION STORAGE
Information
Patent Grant
Power-on reset circuit
Patent number
8,797,070
Issue date
Aug 5, 2014
Seiko Instruments Inc.
Tomohiro Oka
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Boosting circuit
Patent number
8,203,378
Issue date
Jun 19, 2012
Seiko Instruments Inc.
Ayaka Otani
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Memory circuit and voltage detection circuit including the same
Patent number
8,179,729
Issue date
May 15, 2012
Seiko Instruments Inc.
Kotaro Watanabe
G11 - INFORMATION STORAGE
Information
Patent Grant
Voltage switching circuit
Patent number
7,911,259
Issue date
Mar 22, 2011
Seiko Instruments Inc.
Tomohiro Oka
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Semiconductor memory device
Patent number
7,835,188
Issue date
Nov 16, 2010
Seiko Instruments Inc.
Yutaka Satou
G11 - INFORMATION STORAGE
Information
Patent Grant
Boosting and step-down switching regulator controlling circuit and...
Patent number
6,580,253
Issue date
Jun 17, 2003
Seiko Instruments Inc.
Yoshihide Kanakubo
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Patents Applications
last 30 patents
Information
Patent Application
ZERO CROSS DETECTION CIRCUIT AND SENSOR DEVICE
Publication number
20190324066
Publication date
Oct 24, 2019
ABLIC Inc.
Minoru ARIYAMA
G01 - MEASURING TESTING
Information
Patent Application
SWITCH CIRCUIT
Publication number
20160218710
Publication date
Jul 28, 2016
SEIKO INSTRUMENTS INC.
Naohiro Hiraoka
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
SEMICONDUCTOR DEVICE
Publication number
20140325300
Publication date
Oct 30, 2014
SEIKO INSTRUMENTS INC.
Tomohiro OKA
G01 - MEASURING TESTING
Information
Patent Application
BOOSTING CIRCUIT
Publication number
20130234768
Publication date
Sep 12, 2013
SEIKO INSTRUMENTS INC.
Masaya MURATA
G11 - INFORMATION STORAGE
Information
Patent Application
POWER-ON RESET CIRCUIT
Publication number
20130194011
Publication date
Aug 1, 2013
SEIKO INSTRUMENTS INC.
Tomohiro Oka
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
MEMORY CIRCUIT AND VOLTAGE DETECTION CIRCUIT INCLUDING THE SAME
Publication number
20110032776
Publication date
Feb 10, 2011
Kotaro Watanabe
G11 - INFORMATION STORAGE
Information
Patent Application
BOOSTING CIRCUIT
Publication number
20100214011
Publication date
Aug 26, 2010
Ayaka Otani
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Booster circuit
Publication number
20100123512
Publication date
May 20, 2010
Yasushi Imai
G11 - INFORMATION STORAGE
Information
Patent Application
VOLTAGE SWITCHING CIRCUIT
Publication number
20100013547
Publication date
Jan 21, 2010
Tomohiro Oka
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
SEMICONDUCTOR MEMORY DEVICE
Publication number
20090190407
Publication date
Jul 30, 2009
Yutaka Satou
G11 - INFORMATION STORAGE
Information
Patent Application
Switching power source apparatus
Publication number
20070210776
Publication date
Sep 13, 2007
SEIKO INSTRUMENTS INC.
Tomohiro Oka
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Boosting and step-down switching regulator controlling circuit and...
Publication number
20030052654
Publication date
Mar 20, 2003
Yoshihide Kanakubo
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER