Kazuaki OISHI

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Wireless communication apparatus
- Patent number 11,770,142
- Issue date Sep 26, 2023
- Fujitsu Limited
- Kazuaki Oishi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Amplifier circuit and filter
- Patent number 10,348,260
- Issue date Jul 9, 2019
- Fujitsu Limited
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Power amplifier circuit and semiconductor integrated circuit
- Patent number 10,050,587
- Issue date Aug 14, 2018
- Fujitsu Limited
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Communication device, method and communication system
- Patent number 9,807,689
- Issue date Oct 31, 2017
- Fujitsu Limited
- Kazuaki Oishi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Power supply device and semiconductor integrated circuit device
- Patent number 9,614,440
- Issue date Apr 4, 2017
- Fujitsu Limited
- Kazuaki Oishi
- G05 - CONTROLLING REGULATING
Information Patent Grant
Differential amplification circuit
- Patent number 9,450,549
- Issue date Sep 20, 2016
- Fujitsu Limited
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Power on reset circuit, power supply circuit, and power supply system
- Patent number 9,270,265
- Issue date Feb 23, 2016
- Fujitsu Limited
- Hiroyuki Nakamoto
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Signal generation circuit
- Patent number 9,225,288
- Issue date Dec 29, 2015
- Fujitsu Limited
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Amplifier circuit
- Patent number 9,099,977
- Issue date Aug 4, 2015
- Fujitsu Limited
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
MASH sigma-delta modulator and DA converter circuit
- Patent number 9,007,248
- Issue date Apr 14, 2015
- Fujitsu Limited
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Signal generator circuit and radio transmission and reception devic...
- Patent number 8,938,204
- Issue date Jan 20, 2015
- Fujitsu Limited
- Kazuaki Oishi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Amplifier circuit
- Patent number 8,872,582
- Issue date Oct 28, 2014
- Fujitsu Limited
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Poly-phase filter, and a single-side band mixer including the same
- Patent number 8,797,111
- Issue date Aug 5, 2014
- Fujitsu Limited
- Kazuaki Oishi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Filter, and transmitter and receiver having the same
- Patent number 8,604,955
- Issue date Dec 10, 2013
- Fujitsu Limited
- Kazuaki Oishi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Frequency-variable filter
- Patent number 8,482,344
- Issue date Jul 9, 2013
- Fujitsu Limited
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Filter circuit
- Patent number 8,406,357
- Issue date Mar 26, 2013
- Fujitsu Limited
- Daisuke Yamazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Variable gain amplifier circuit and filter circuit
- Patent number 8,111,096
- Issue date Feb 7, 2012
- Fujitsu Limited
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Noise cancellation circuit and amplifier with noise cancellation ci...
- Patent number 8,045,949
- Issue date Oct 25, 2011
- Fujitsu Limited
- Kazuaki Oishi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Semiconductor device
- Patent number 7,855,601
- Issue date Dec 21, 2010
- Fujitsu Limited
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Correction circuit
- Patent number 7,835,462
- Issue date Nov 16, 2010
- Fujitsu Semiconductor Limited
- Kazuaki Oishi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Bias circuit
- Patent number 7,746,168
- Issue date Jun 29, 2010
- Fujitsu Semiconductor Limited
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Variable gain amplifier circuit and filter circuit
- Patent number 7,679,447
- Issue date Mar 16, 2010
- Fujitsu Limited
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Orthogonal signal output circuit
- Patent number 7,667,523
- Issue date Feb 23, 2010
- Fujitsu Limited
- Kazuaki Oishi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Transconductance compensating bias circuit and amplifier
- Patent number 7,633,346
- Issue date Dec 15, 2009
- Fujitsu Limited
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Amplifying apparatus and bias stabilization circuit
- Patent number 7,629,853
- Issue date Dec 8, 2009
- Fujitsu Limited
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Source follower circuit and semiconductor apparatus
- Patent number 7,629,846
- Issue date Dec 8, 2009
- Fujitsu Limited
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Q value correction of filter circuit
- Patent number 7,315,199
- Issue date Jan 1, 2008
- Fujitsu Limited
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Frequency measurement circuit
- Patent number 6,917,191
- Issue date Jul 12, 2005
- Fujitsu Limited
- Kazuaki Oishi
- G01 - MEASURING TESTING
Information Patent Grant
Frequency measurement circuit
- Patent number 6,674,277
- Issue date Jan 6, 2004
- Fujitsu Limited
- Kazuaki Oishi
- G01 - MEASURING TESTING
Information Patent Grant
Suppressing channel-dependent spurious signals in fractional-N synt...
- Patent number 6,317,476
- Issue date Nov 13, 2001
- Fujitsu Limited
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
WIRELESS COMMUNICATION APPARATUS
- Publication number 20220231713
- Publication date Jul 21, 2022
- Fujitsu Limited
- Kazuaki OISHI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
DELAY LOCKED LOOP CIRCUIT
- Publication number 20190214998
- Publication date Jul 11, 2019
- Fujitsu Limited
- Ikuo SOGA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PULSE POSITION MODULATION CIRCUIT
- Publication number 20190207646
- Publication date Jul 4, 2019
- Fujitsu Limited
- Ikuo SOGA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
AMPLIFIER CIRCUIT AND FILTER
- Publication number 20190068148
- Publication date Feb 28, 2019
- Fujitsu Limited
- Kazuaki OISHI
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
POWER SOURCE CIRCUIT
- Publication number 20180287572
- Publication date Oct 4, 2018
- Fujitsu Limited
- Kazuaki OISHI
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
ELECTRONIC APPARATUS, METHOD FOR CONTROLLING THE SAME, AND CONTROL...
- Publication number 20180097389
- Publication date Apr 5, 2018
- Fujitsu Limited
- Kazuaki OISHI
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
POWER AMPLIFIER CIRCUIT AND SEMICONDUCTOR INTEGRATED CIRCUIT
- Publication number 20170179886
- Publication date Jun 22, 2017
- Fujitsu Limited
- Kazuaki OISHI
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
ABNORMALITY DETECTION METHOD AND INFORMATION PROCESSING APPARATUS
- Publication number 20160357623
- Publication date Dec 8, 2016
- Fujitsu Limited
- Kazuaki Oishi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
DEVICE AND MEMORY CONTROL METHOD
- Publication number 20160252938
- Publication date Sep 1, 2016
- Fujitsu Limited
- Kazuaki OISHI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
COMMUNICATION DEVICE, METHOD AND COMMUNICATION SYSTEM
- Publication number 20160174152
- Publication date Jun 16, 2016
- Fujitsu Limited
- Kazuaki OISHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DIFFERENTIAL AMPLIFICATION CIRCUIT
- Publication number 20150341004
- Publication date Nov 26, 2015
- Fujitsu Limited
- Kazuaki OISHI
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
AMPLIFIER CIRCUIT
- Publication number 20150077184
- Publication date Mar 19, 2015
- Fujitsu Limited
- Kazuaki OISHI
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
POWER SUPPLY DEVICE AND SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE
- Publication number 20140285164
- Publication date Sep 25, 2014
- Fujitsu Limited
- Kazuaki OISHI
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
POWER ON RESET CIRCUIT, POWER SUPPLY CIRCUIT, AND POWER SUPPLY SYSTEM
- Publication number 20140285243
- Publication date Sep 25, 2014
- FUJITSU SEMICONDUCTOR LIMITED
- Hiroyuki NAKAMOTO
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
SIGNAL GENERATION CIRCUIT
- Publication number 20140285250
- Publication date Sep 25, 2014
- FUJITSU SEMICONDUCTOR LIMITED
- Kazuaki OISHI
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
AMPLIFIER CIRCUIT
- Publication number 20140253232
- Publication date Sep 11, 2014
- Fujitsu Limited
- Kazuaki OISHI
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
MASH SIGMA-DELTA MODULATOR AND DA CONVERTER CIRCUIT
- Publication number 20140015700
- Publication date Jan 16, 2014
- Fujitsu Limited
- Kazuaki OISHI
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
DIFFERENTIAL CURRENT SOURCE AND DIFFERENTIAL CURRENT MIRROR CIRCUIT
- Publication number 20140009139
- Publication date Jan 9, 2014
- Fujitsu Limited
- Kazuaki OISHI
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
SIGNAL GENERATOR CIRCUIT AND RADIO TRANSMISSION AND RECEPTION DEVIC...
- Publication number 20130130632
- Publication date May 23, 2013
- Fujitsu Limited
- Kazuaki OISHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
FREQUENCY-VARIABLE FILTER
- Publication number 20130009699
- Publication date Jan 10, 2013
- Fujitsu Limited
- Kazuaki OISHI
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
POLY-PHASE FILTER, AND A SINGLE-SIDE BAND MIXER INCLUDING THE SAME
- Publication number 20120092085
- Publication date Apr 19, 2012
- Fujitsu Limited
- Kazuaki OISHI
- C07 - ORGANIC CHEMISTRY
Information Patent Application
FILTER, AND TRANSMITTER AND RECEIVER HAVING THE SAME
- Publication number 20110170628
- Publication date Jul 14, 2011
- Fujitsu Limited
- Kazuaki OISHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Analog Switch
- Publication number 20100283527
- Publication date Nov 11, 2010
- Fujitsu Limited
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Variable Gain Amplifier Circuit and Filter Circuit
- Publication number 20100171549
- Publication date Jul 8, 2010
- Fujitsu Limited
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
SEMICONDUCTOR DEVICE
- Publication number 20090302947
- Publication date Dec 10, 2009
- Fujitsu Limited
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
ORTHOGONAL SIGNAL OUTPUT CIRCUIT
- Publication number 20090302925
- Publication date Dec 10, 2009
- Fujitsu Limited
- Kazuaki Oishi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
NOISE CANCELLATION CIRCUIT AND AMPLIFIER WITH NOISE CANCELLATION CI...
- Publication number 20090291661
- Publication date Nov 26, 2009
- Fujitsu Limited
- Kazuaki OISHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
AMPLIFYING APPARATUS AND BIAS STABILIZATION CIRCUIT
- Publication number 20090108939
- Publication date Apr 30, 2009
- Fujitsu Limited
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
TRANSCONDUCTANCE COMPENSATING BIAS CIRCUIT AND AMPLIFIER
- Publication number 20090108941
- Publication date Apr 30, 2009
- Fujitsu Limited
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Analog switch
- Publication number 20080218244
- Publication date Sep 11, 2008
- FUJITSU LIMITED
- Kazuaki Oishi
- H03 - BASIC ELECTRONIC CIRCUITRY

Kazuaki OISHI

Person

Patents Grantslast 30 patents

Wireless communication apparatus

Amplifier circuit and filter

Power amplifier circuit and semiconductor integrated circuit

Communication device, method and communication system

Power supply device and semiconductor integrated circuit device

Differential amplification circuit

Power on reset circuit, power supply circuit, and power supply system

Signal generation circuit

Amplifier circuit

MASH sigma-delta modulator and DA converter circuit

Signal generator circuit and radio transmission and reception devic...

Amplifier circuit

Poly-phase filter, and a single-side band mixer including the same

Filter, and transmitter and receiver having the same

Frequency-variable filter

Filter circuit

Variable gain amplifier circuit and filter circuit

Noise cancellation circuit and amplifier with noise cancellation ci...

Semiconductor device

Correction circuit

Bias circuit

Variable gain amplifier circuit and filter circuit

Orthogonal signal output circuit

Transconductance compensating bias circuit and amplifier

Amplifying apparatus and bias stabilization circuit

Source follower circuit and semiconductor apparatus

Q value correction of filter circuit

Frequency measurement circuit

Frequency measurement circuit

Suppressing channel-dependent spurious signals in fractional-N synt...

Patents Applicationslast 30 patents

WIRELESS COMMUNICATION APPARATUS

DELAY LOCKED LOOP CIRCUIT

PULSE POSITION MODULATION CIRCUIT

AMPLIFIER CIRCUIT AND FILTER

POWER SOURCE CIRCUIT

ELECTRONIC APPARATUS, METHOD FOR CONTROLLING THE SAME, AND CONTROL...

POWER AMPLIFIER CIRCUIT AND SEMICONDUCTOR INTEGRATED CIRCUIT

ABNORMALITY DETECTION METHOD AND INFORMATION PROCESSING APPARATUS

DEVICE AND MEMORY CONTROL METHOD

COMMUNICATION DEVICE, METHOD AND COMMUNICATION SYSTEM

DIFFERENTIAL AMPLIFICATION CIRCUIT

AMPLIFIER CIRCUIT

POWER SUPPLY DEVICE AND SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE

POWER ON RESET CIRCUIT, POWER SUPPLY CIRCUIT, AND POWER SUPPLY SYSTEM

SIGNAL GENERATION CIRCUIT

AMPLIFIER CIRCUIT

MASH SIGMA-DELTA MODULATOR AND DA CONVERTER CIRCUIT

DIFFERENTIAL CURRENT SOURCE AND DIFFERENTIAL CURRENT MIRROR CIRCUIT

SIGNAL GENERATOR CIRCUIT AND RADIO TRANSMISSION AND RECEPTION DEVIC...

FREQUENCY-VARIABLE FILTER

POLY-PHASE FILTER, AND A SINGLE-SIDE BAND MIXER INCLUDING THE SAME

FILTER, AND TRANSMITTER AND RECEIVER HAVING THE SAME

Analog Switch

Variable Gain Amplifier Circuit and Filter Circuit

SEMICONDUCTOR DEVICE

ORTHOGONAL SIGNAL OUTPUT CIRCUIT

NOISE CANCELLATION CIRCUIT AND AMPLIFIER WITH NOISE CANCELLATION CI...

AMPLIFYING APPARATUS AND BIAS STABILIZATION CIRCUIT

TRANSCONDUCTANCE COMPENSATING BIAS CIRCUIT AND AMPLIFIER

Analog switch