Kazuo Kawai

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Receiver input circuit
- Patent number 7,587,182
- Issue date Sep 8, 2009
- General Research of Electronics, Inc.
- Kazuo Kawai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Scanning receiver
- Patent number 7,415,255
- Issue date Aug 19, 2008
- General Research of Electronics, Inc.
- Kiyoshi Wakui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Circuit for detecting a center level of a FSK demodulated signal to...
- Patent number 7,088,790
- Issue date Aug 8, 2006
- General Research of Electronics, Inc.
- Kazuo Kawai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Negative impedance converter
- Patent number 7,005,950
- Issue date Feb 28, 2006
- General Research of Electronics, Inc.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Negative resistance circuit
- Patent number 6,985,053
- Issue date Jan 10, 2006
- General Research of Electronics, Inc.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Tuning circuit
- Patent number 6,954,123
- Issue date Oct 11, 2005
- General Research of Electronics, Inc.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Circuit for detecting and correcting central level of FSK demodulat...
- Patent number 6,933,775
- Issue date Aug 23, 2005
- General Research of Electronics, Inc.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Tuning circuit
- Patent number 6,870,447
- Issue date Mar 22, 2005
- General Research of Electronics, Inc.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Tuning circuit
- Patent number 6,836,199
- Issue date Dec 28, 2004
- General Research of Electronics, Inc.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
All pass filter
- Patent number 6,816,005
- Issue date Nov 9, 2004
- General Research of Electronics, Inc.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Active filter
- Patent number 6,803,812
- Issue date Oct 12, 2004
- General Research of Electronics, Inc.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Tuning circuit having a resonance circuit and a negative resistance...
- Patent number 6,628,181
- Issue date Sep 30, 2003
- General Research of Electronics, Inc.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Frequency scanning FSK receiver
- Patent number 6,570,937
- Issue date May 27, 2003
- General Research of Electronics, Inc.
- Kazuo Kawai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Direct modulating FSK transmitter for MCA
- Patent number 6,546,060
- Issue date Apr 8, 2003
- General Research of Electronics, Inc.
- Kazuo Kawai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tuning circuit including a negative impedance circuit
- Patent number 6,545,570
- Issue date Apr 8, 2003
- General Research of Electronics, Inc.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Circuit for detecting a center error to correct same
- Patent number 6,529,565
- Issue date Mar 4, 2003
- General Research of Electronics, Inc.
- Kazuo Kawai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tuning circuit with controlled negative resistance
- Patent number 6,504,458
- Issue date Jan 7, 2003
- General Research of Electronics, Inc.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
FSK signal demodulating integration-discharge circuit
- Patent number 6,480,060
- Issue date Nov 12, 2002
- General Research of Electronics, Inc.
- Kazuo Kawai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Tuning circuit
- Patent number 6,456,174
- Issue date Sep 24, 2002
- General Research of Electronics, Inc.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Variable capacitance circuit
- Patent number 6,396,328
- Issue date May 28, 2002
- General Research of Electronics Inc.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Frequency scanning type receiver
- Patent number 6,396,882
- Issue date May 28, 2002
- General Research of Electronics, Inc.
- Kazuo Kawai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Biquad notch filter
- Patent number 6,373,332
- Issue date Apr 16, 2002
- General Research of Electronics, Inc.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Variable capacitance circuit
- Patent number 6,225,861
- Issue date May 1, 2001
- General Resaerch of Electronics, Inc.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Center frequency error detecting circuit for FSK signal receiver
- Patent number 6,188,733
- Issue date Feb 13, 2001
- General Research of Electronics, Inc.
- Kazuo Kawai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
AFC circuit for a frequency scanning FSK receiver
- Patent number 6,137,846
- Issue date Oct 24, 2000
- General Research of Electronics, Inc.
- Kazuo Kawai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
AFC circuit for a frequency scanning receiver
- Patent number 6,108,387
- Issue date Aug 22, 2000
- General Research of Electronics, Inc.
- Kazuo Kawai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Frequency discriminator for a direct conversion receiver
- Patent number 6,072,997
- Issue date Jun 6, 2000
- General Research of Electronics, Inc.
- Kazuo Kawai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Circuit for producing clock pulses from an inputted base band signal
- Patent number 6,066,970
- Issue date May 23, 2000
- General Research of Electronics, Inc.
- Kazuo Kawai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Direct conversion FSK signal radio receiver
- Patent number 6,038,268
- Issue date Mar 14, 2000
- General Research of Electronics, Inc.
- Kazuo Kawai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Clock reproducing circuit for packet FSK signal receiver
- Patent number 5,999,577
- Issue date Dec 7, 1999
- General Research of Electronics, Inc.
- Kazuo Kawai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
PHASE COMPARISON SIGNAL PROCESSING CIRCUIT
- Publication number 20080048742
- Publication date Feb 28, 2008
- GENERAL RESEARCH OF ELECTRONICS, INC.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
VOLTAGE CONTROLLED OSCILLATOR
- Publication number 20080018410
- Publication date Jan 24, 2008
- GENERAL RESEARCH OF ELECTRONICS, INC.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
ACTIVE INDUCTOR
- Publication number 20070257748
- Publication date Nov 8, 2007
- GENERAL RESEARCH OF ELECTRONICS, INC.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
ACTIVE CAPACITOR
- Publication number 20070257747
- Publication date Nov 8, 2007
- GENERAL RESEARCH OF ELECTRONICS, INC.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
RECEIVER INPUT CIRCUIT
- Publication number 20070188260
- Publication date Aug 16, 2007
- GENERAL RESEARCH OF ELECTRONICS, INC.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
ACTIVE INDUCTOR
- Publication number 20070188274
- Publication date Aug 16, 2007
- GENERAL RESEARCH OF ELECTRONICS, INC.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
ACTIVE CAPACITOR
- Publication number 20070188973
- Publication date Aug 16, 2007
- GENERAL RESEARCH OF ELECTRONICS, INC.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
RECEIVER INPUT CIRCUIT
- Publication number 20070099589
- Publication date May 3, 2007
- GENERAL RESEARCH OF ELECTRONICS, INC.
- Kazuo Kawai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Non-linear circuit
- Publication number 20070046272
- Publication date Mar 1, 2007
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Variable resistance circuit
- Publication number 20070001738
- Publication date Jan 4, 2007
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
FSK signal generator
- Publication number 20060176978
- Publication date Aug 10, 2006
- Kazuo Kawai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
FSK signal generator
- Publication number 20060146957
- Publication date Jul 6, 2006
- Kazuo Kawai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Scanning receiver
- Publication number 20060057986
- Publication date Mar 16, 2006
- GENERAL RESEARCH OF ELECTRONICS, INC.
- Kiyoshi Wakui
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
VARIABLE ATTENUATION CIRCUIT
- Publication number 20060044040
- Publication date Mar 2, 2006
- GENERAL RESEARCH OF ELECTRONICS, INC.
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Negative impedance converter
- Publication number 20040222871
- Publication date Nov 11, 2004
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Negative resistance circuit
- Publication number 20040183628
- Publication date Sep 23, 2004
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Tuning circuit
- Publication number 20040130416
- Publication date Jul 8, 2004
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Tuning circuit
- Publication number 20040041669
- Publication date Mar 4, 2004
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Tuning circuit
- Publication number 20040017273
- Publication date Jan 29, 2004
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Active filter
- Publication number 20030234682
- Publication date Dec 25, 2003
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Circuit for detecting and correcting central level of FSK demodulat...
- Publication number 20030151455
- Publication date Aug 14, 2003
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Circuit for detecting a center level of a FSK demodulated signal to...
- Publication number 20030147477
- Publication date Aug 7, 2003
- Kazuo Kawai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
All pass filter
- Publication number 20030090315
- Publication date May 15, 2003
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Tuning circuit
- Publication number 20020163406
- Publication date Nov 7, 2002
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Tuning circuit
- Publication number 20020118082
- Publication date Aug 29, 2002
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Tuning circuit
- Publication number 20020101306
- Publication date Aug 1, 2002
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Tuning circuit
- Publication number 20020036553
- Publication date Mar 28, 2002
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
FSK signal demodulating integration-discharge circuit
- Publication number 20020000876
- Publication date Jan 3, 2002
- Kazuo Kawai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Variable capacitance circuit
- Publication number 20010004221
- Publication date Jun 21, 2001
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Biquad notch filter
- Publication number 20010000297
- Publication date Apr 19, 2001
- Kazuo Kawai
- H03 - BASIC ELECTRONIC CIRCUITRY

Kazuo Kawai

Person

Patents Grantslast 30 patents

Receiver input circuit

Scanning receiver

Circuit for detecting a center level of a FSK demodulated signal to...

Negative impedance converter

Negative resistance circuit

Tuning circuit

Circuit for detecting and correcting central level of FSK demodulat...

Tuning circuit

Tuning circuit

All pass filter

Active filter

Tuning circuit having a resonance circuit and a negative resistance...

Frequency scanning FSK receiver

Direct modulating FSK transmitter for MCA

Tuning circuit including a negative impedance circuit

Circuit for detecting a center error to correct same

Tuning circuit with controlled negative resistance

FSK signal demodulating integration-discharge circuit

Tuning circuit

Variable capacitance circuit

Frequency scanning type receiver

Biquad notch filter

Variable capacitance circuit

Center frequency error detecting circuit for FSK signal receiver

AFC circuit for a frequency scanning FSK receiver

AFC circuit for a frequency scanning receiver

Frequency discriminator for a direct conversion receiver

Circuit for producing clock pulses from an inputted base band signal

Direct conversion FSK signal radio receiver

Clock reproducing circuit for packet FSK signal receiver

Patents Applicationslast 30 patents

PHASE COMPARISON SIGNAL PROCESSING CIRCUIT

VOLTAGE CONTROLLED OSCILLATOR

ACTIVE INDUCTOR

ACTIVE CAPACITOR

RECEIVER INPUT CIRCUIT

ACTIVE INDUCTOR

ACTIVE CAPACITOR

RECEIVER INPUT CIRCUIT

Non-linear circuit

Variable resistance circuit

FSK signal generator

FSK signal generator

Scanning receiver

VARIABLE ATTENUATION CIRCUIT

Negative impedance converter

Negative resistance circuit

Tuning circuit

Tuning circuit

Tuning circuit

Active filter

Circuit for detecting and correcting central level of FSK demodulat...

Circuit for detecting a center level of a FSK demodulated signal to...

All pass filter

Tuning circuit

Tuning circuit

Tuning circuit

Tuning circuit

FSK signal demodulating integration-discharge circuit

Variable capacitance circuit

Biquad notch filter