Seijiro Ishizuka

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Receiving apparatus
- Patent number 7,221,923
- Issue date May 22, 2007
- Sony Corporation
- Kuniko Jimi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Mobile telephone system which sends a mobile's positional data to c...
- Patent number 6,101,391
- Issue date Aug 8, 2000
- Sony Corporation
- Seijiro Ishizuka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Portable radio apparatus with coaxial antenna feeder in microphone arm
- Patent number 6,052,567
- Issue date Apr 18, 2000
- Sony Corporation
- Hiroki Ito
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Radio telephone apparatus for performing space diversity reception...
- Patent number 5,930,245
- Issue date Jul 27, 1999
- Sony Corporation
- Seijiro Ishizuka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Transmitting receiving apparatus
- Patent number 5,862,181
- Issue date Jan 19, 1999
- Sony Corporation
- Seijiro Ishizuka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of and apparatus for diagnosing personal communication system
- Patent number 5,805,666
- Issue date Sep 8, 1998
- Sony Corporation
- Seijiro Ishizuka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dual-mode transceiver that switches out a large insertion loss filt...
- Patent number 5,276,914
- Issue date Jan 4, 1994
- Sony Corporation
- Seijiro Ishizuka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Receiving apparatus
- Publication number 20050026585
- Publication date Feb 3, 2005
- SONY CORPORATION
- Kuniko Jimi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Seijiro Ishizuka

Person

Patents Grantslast 30 patents

Receiving apparatus

Mobile telephone system which sends a mobile's positional data to c...

Portable radio apparatus with coaxial antenna feeder in microphone arm

Radio telephone apparatus for performing space diversity reception...

Transmitting receiving apparatus

Method of and apparatus for diagnosing personal communication system

Dual-mode transceiver that switches out a large insertion loss filt...

Patents Applicationslast 30 patents

Receiving apparatus