Kazuhisa Ishiguro

Person

Nitta, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Automatic gain control circuit
- Patent number 8,284,876
- Issue date Oct 9, 2012
- Ricoh Co., Ltd.
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Automatic gain control apparatus for wireless communication apparatus
- Patent number 7,991,371
- Issue date Aug 2, 2011
- Ricoh Co., Ltd.
- Kazuhisa Ishiguro
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Differential amplifier
- Patent number 7,868,695
- Issue date Jan 11, 2011
- Ricoh Co., Ltd.
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Automatic power output control circuit
- Patent number 7,852,967
- Issue date Dec 14, 2010
- Ricoh Co., Ltd.
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Antenna damping circuit and high frequency receiver employing same
- Patent number 7,848,721
- Issue date Dec 7, 2010
- Ricoh Co., Ltd.
- Kazuhisa Ishiguro
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Filter circuit
- Patent number 7,843,258
- Issue date Nov 30, 2010
- Ricoh Co., Ltd.
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Automatic regulator of filter
- Patent number 7,812,685
- Issue date Oct 12, 2010
- Ricoh Co., Ltd.
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Automatic gain control circuit and low noise amplifying circuit
- Patent number 7,795,979
- Issue date Sep 14, 2010
- Ricoh Co., Ltd.
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Automatic gain control circuit
- Patent number 7,639,085
- Issue date Dec 29, 2009
- Ricoh Co., Ltd.
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Power amplifier and its idling current setting circuit
- Patent number 7,602,248
- Issue date Oct 13, 2009
- Niigata Seimitsu Co., Ltd.
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Spread spectrum signal receiving apparatus
- Patent number 5,940,428
- Issue date Aug 17, 1999
- Sanyo Electric Co., Ltd.
- Kazuhisa Ishiguro
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Spread spectrum signal receiver
- Patent number 5,903,593
- Issue date May 11, 1999
- Sanyo Electric Co., Ltd.
- Kazuhisa Ishiguro
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Amplifier circuit
- Patent number 5,087,890
- Issue date Feb 11, 1992
- Sanyo Electric Co., Ltd.
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
FSK data waveform shaping circuit
- Patent number 5,068,544
- Issue date Nov 26, 1991
- Sanyo Electric Co., Ltd.
- Kazuhisa Ishiguro
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Amplification circuit with improved linearity
- Patent number 5,065,112
- Issue date Nov 12, 1991
- Sanyo Electric Co., Ltd.
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Power saving arrangement and power saving method
- Patent number 5,027,428
- Issue date Jun 25, 1991
- Sanyo Electric Co. Ltd.
- Kazuhisa Ishiguro
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Power-saving low-frequency power amplifier
- Patent number 5,014,017
- Issue date May 7, 1991
- Sanyo Electric Co., Ltd.
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Variable reactance circuit producing negative to positive varying r...
- Patent number 4,990,872
- Issue date Feb 5, 1991
- Sanyo Electric Co., Ltd.
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Fm stereo demodulator
- Patent number 4,972,482
- Issue date Nov 20, 1990
- Sanyo Electric Co., Ltd.
- Kazuhisa Ishiguro
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Stereo demodulator and a demodulating method thereof
- Patent number 4,944,010
- Issue date Jul 24, 1990
- Sanyo Electric Co., Ltd.
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
FMX stereophonic broadcast receiver
- Patent number 4,864,637
- Issue date Sep 5, 1989
- Sanyo Electric Co, Ltd.
- Tsutomu Ishikawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
FMX stereophonic receiver
- Patent number 4,852,167
- Issue date Jul 25, 1989
- Sanyo Electric Co., Ltd.
- Noboru Usui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
FM/FMX stereophonic receiver
- Patent number 4,809,328
- Issue date Feb 28, 1989
- Sanyo Electric Co., Ltd.
- Noboru Usui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Variable reactance circuit producing negative to positive varying r...
- Patent number 4,587,500
- Issue date May 6, 1986
- Sanyo Electric Co., Ltd.
- Kanji Tanaka
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
FILTER CIRCUIT
- Publication number 20100117724
- Publication date May 13, 2010
- NIIGATA SEIMITSU CO., LTD.
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
DIFFERENTIAL AMPLIFIER
- Publication number 20100001797
- Publication date Jan 7, 2010
- Niigata Seimitsu Co., Ltd.
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
AUTOMATIC GAIN CONTROL CIRCUIT
- Publication number 20090310723
- Publication date Dec 17, 2009
- Kazuhisa ISHIGURO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPEN GAIN ADJUSTMENT CIRCUIT FOR OPERATIONAL AMPLIFIER
- Publication number 20090261905
- Publication date Oct 22, 2009
- NIIGATA SEIMITSU CO., LTD.
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
AUTOMATIC GAIN CONTROL CIRCUIT
- Publication number 20090207952
- Publication date Aug 20, 2009
- Niigata Seimitsu Co., Ltd.
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
RECEIVER
- Publication number 20090176471
- Publication date Jul 9, 2009
- Kazuhisa ISHIGURO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
AUTOMATIC REGULATOR OF FILTER
- Publication number 20090128259
- Publication date May 21, 2009
- NIIGATA SEIMITSU CO., LTD.
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
TUNING CIRCUIT AND RADIO RECEIVER USING THE SAME
- Publication number 20090124225
- Publication date May 14, 2009
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
AUTOMATIC GAIN CONTROL CIRCUIT
- Publication number 20090124227
- Publication date May 14, 2009
- Kazuhisa ISHIGURO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
INTERMODULATION DISTURBANCE DETECTING UNIT
- Publication number 20090124228
- Publication date May 14, 2009
- NIIGATA SEIMITSU CO., LTD.
- Kazuhisa Ishiguro
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
POWER AMPLIFIER AND ITS IDLING CURRENT SETTING CIRCUIT
- Publication number 20090115519
- Publication date May 7, 2009
- Niigate Seimitsu Co., Ltd
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
INTERMODULATION DISTURBANCE DETECTING CIRCUIT
- Publication number 20090111416
- Publication date Apr 30, 2009
- NIIGATA SEIMITSU CO., LTD.
- Kazuhisa Ishiguro
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
AUTOMATIC GAIN CONTROL CIRCUIT
- Publication number 20090103668
- Publication date Apr 23, 2009
- Niigata Seimitsu Co., Ltd.
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
AUTOMATIC GAIN CONTROL CIRCUIT AND LOW NOISE AMPLIFYING CIRCUIT
- Publication number 20090096527
- Publication date Apr 16, 2009
- Niigat Seimitsu Co., Ltd.
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
VARIABLE GAIN AMPLIFIER
- Publication number 20090027128
- Publication date Jan 29, 2009
- NIIGATA SEIMITSU CO., LTD.
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Antenna Damping Circuit and High Frequency Receiver Employing Same
- Publication number 20090009266
- Publication date Jan 8, 2009
- Kazuhisa Ishiguro
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
AUTOMATIC GAIN CONTROL APPARATUS
- Publication number 20080090538
- Publication date Apr 17, 2008
- NIIGATA SEIMITSU CO., LTD.
- Kazuhisa Ishiguro
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
AUTOMATIC POWER OUTPUT CONTROL CIRCUIT
- Publication number 20070170988
- Publication date Jul 26, 2007
- NIIGATA SEIMITSU CO., LTD.
- Kazuhisa Ishiguro
- H03 - BASIC ELECTRONIC CIRCUITRY

Kazuhisa Ishiguro

Person

Patents Grantslast 30 patents

Automatic gain control circuit

Automatic gain control apparatus for wireless communication apparatus

Differential amplifier

Automatic power output control circuit

Antenna damping circuit and high frequency receiver employing same

Filter circuit

Automatic regulator of filter

Automatic gain control circuit and low noise amplifying circuit

Automatic gain control circuit

Power amplifier and its idling current setting circuit

Spread spectrum signal receiving apparatus

Spread spectrum signal receiver

Amplifier circuit

FSK data waveform shaping circuit

Amplification circuit with improved linearity

Power saving arrangement and power saving method

Power-saving low-frequency power amplifier

Variable reactance circuit producing negative to positive varying r...

Fm stereo demodulator

Stereo demodulator and a demodulating method thereof

FMX stereophonic broadcast receiver

FMX stereophonic receiver

FM/FMX stereophonic receiver

Variable reactance circuit producing negative to positive varying r...

Patents Applicationslast 30 patents

FILTER CIRCUIT

DIFFERENTIAL AMPLIFIER

AUTOMATIC GAIN CONTROL CIRCUIT

OPEN GAIN ADJUSTMENT CIRCUIT FOR OPERATIONAL AMPLIFIER

AUTOMATIC GAIN CONTROL CIRCUIT

RECEIVER

AUTOMATIC REGULATOR OF FILTER

TUNING CIRCUIT AND RADIO RECEIVER USING THE SAME

AUTOMATIC GAIN CONTROL CIRCUIT

INTERMODULATION DISTURBANCE DETECTING UNIT

POWER AMPLIFIER AND ITS IDLING CURRENT SETTING CIRCUIT

INTERMODULATION DISTURBANCE DETECTING CIRCUIT

AUTOMATIC GAIN CONTROL CIRCUIT

AUTOMATIC GAIN CONTROL CIRCUIT AND LOW NOISE AMPLIFYING CIRCUIT

VARIABLE GAIN AMPLIFIER

Antenna Damping Circuit and High Frequency Receiver Employing Same

AUTOMATIC GAIN CONTROL APPARATUS

AUTOMATIC POWER OUTPUT CONTROL CIRCUIT