Yoshiaki Kumagai

Person

Kawasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Radio base station for a CDMA mobile communication system
- Patent number 6,728,264
- Issue date Apr 27, 2004
- Fujitsu Limited
- Yoshiaki Kumagai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Base station transmitter-receiver
- Patent number 6,125,138
- Issue date Sep 26, 2000
- Fujitsu Limited
- Yoshiaki Kumagai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Wideband transceiver
- Patent number 5,963,587
- Issue date Oct 5, 1999
- Fujitsu Limited
- Yoshiaki Kumagai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Transmission/reception apparatus
- Patent number 5,937,336
- Issue date Aug 10, 1999
- Fujitsu Limited
- Yoshiaki Kumagai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Automatic gain control circuit with input and output signal detecto...
- Patent number 5,768,694
- Issue date Jun 16, 1998
- Fujitsu Limited
- Yoshiaki Kumagai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Transmitter-receiver apparatus
- Patent number 5,754,949
- Issue date May 19, 1998
- Fujistu Limited
- Yoshiaki Kumagai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Automatic frequency control circuit selectively using frequency-div...
- Patent number 5,548,811
- Issue date Aug 20, 1996
- Fujitsu Limited
- Yoshiaki Kumagai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Signal transmission device having an automatic transmission level c...
- Patent number 5,410,729
- Issue date Apr 25, 1995
- Fujitsu Limited
- Yoshiaki Kumagai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Automatic transmission level control device
- Patent number 5,257,415
- Issue date Oct 26, 1993
- Fujitsu Limited
- Yoshiaki Kumagai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Signal generator having backup oscillator switching circuit
- Patent number 5,235,292
- Issue date Aug 10, 1993
- Fujitsu Limited
- Yoichi Endo
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Phase locked loop having circuit for recovering from oscillation st...
- Patent number 4,968,951
- Issue date Nov 6, 1990
- Fujitsu Limited
- Eiji Itaya
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
WIRELESS COMMUNICATION SYSTEM
- Publication number 20100081391
- Publication date Apr 1, 2010
- Fujitsu Limited
- Yusuke Suzuki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Yoshiaki Kumagai

Person

Patents Grantslast 30 patents

Radio base station for a CDMA mobile communication system

Base station transmitter-receiver

Wideband transceiver

Transmission/reception apparatus

Automatic gain control circuit with input and output signal detecto...

Transmitter-receiver apparatus

Automatic frequency control circuit selectively using frequency-div...

Signal transmission device having an automatic transmission level c...

Automatic transmission level control device

Signal generator having backup oscillator switching circuit

Phase locked loop having circuit for recovering from oscillation st...

Patents Applicationslast 30 patents

WIRELESS COMMUNICATION SYSTEM