Tomoaki Ishifuji

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Systems and methods for wireless communication using SDMA
- Patent number 8,310,995
- Issue date Nov 13, 2012
- Hitachi, Ltd.
- Shinji Murai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for measuring distance and position using spread spectrum si...
- Patent number 7,969,347
- Issue date Jun 28, 2011
- Hitachi, Ltd.
- Katsuhiko Tsunehara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of providing location service using CDMA-based cellular phon...
- Patent number 7,711,376
- Issue date May 4, 2010
- Hitachi, Ltd.
- Atsushi Ogino
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for measuring distance and position using spread spectrum si...
- Patent number 7,663,532
- Issue date Feb 16, 2010
- Hitachi, Ltd.
- Katsuhiko Tsunehara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Radio communication device
- Patent number 7,660,288
- Issue date Feb 9, 2010
- Hitachi, Ltd.
- Masaaki Shida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for measuring distance and position using spread spectrum si...
- Patent number 7,609,197
- Issue date Oct 27, 2009
- Hitachi, Ltd.
- Katsuhiko Tsunehara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method for wireless communication using a management ser...
- Patent number 7,319,684
- Issue date Jan 15, 2008
- Hitachi, Ltd.
- Tsuyoshi Tamaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital radio communication system for multi-application
- Patent number 7,233,581
- Issue date Jun 19, 2007
- Hitachi, Ltd.
- Hideya Suzuki
- G08 - SIGNALLING
Information Patent Grant
Wireless data communication system, wireless data communication met...
- Patent number 7,209,765
- Issue date Apr 24, 2007
- Hitachi, Ltd.
- Shigenori Hayase
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication method of contactless ID card and integrated circuit...
- Patent number 7,116,709
- Issue date Oct 3, 2006
- Hitachi, Ltd.
- Satoshi Tanaka
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Charging method and terminal equipment in the information and commu...
- Patent number 7,016,665
- Issue date Mar 21, 2006
- Hitachi, Ltd.
- Tsuyoshi Tamaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Contactless IC card
- Patent number 6,963,269
- Issue date Nov 8, 2005
- Hitachi, Ltd.
- Takeshi Saitoh
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method for measuring distance and position using spread spectrum si...
- Patent number 6,900,753
- Issue date May 31, 2005
- Hitachi, Ltd.
- Katsuhiko Tsunehara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for measuring transmitting time offset of a ba...
- Patent number 6,889,051
- Issue date May 3, 2005
- Hitachi, Ltd.
- Atsushi Ogino
- G01 - MEASURING TESTING
Information Patent Grant
Location detection method, location detection system and location d...
- Patent number 6,865,394
- Issue date Mar 8, 2005
- Hitachi, Ltd.
- Atsushi Ogino
- G01 - MEASURING TESTING
Information Patent Grant
Communication method of contactless ID card and integrated circuit...
- Patent number 6,765,959
- Issue date Jul 20, 2004
- Hitachi, Ltd.
- Satoshi Tanaka
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Fixed wireless access system and apparatus therefor
- Patent number 6,731,905
- Issue date May 4, 2004
- Hitachi, Ltd.
- Atsushi Ogino
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Packet communication system and packet communication apparatus
- Patent number 6,731,602
- Issue date May 4, 2004
- Hitachi, Ltd.
- Koji Watanabe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Wireless communication base station transmission timing offset corr...
- Patent number 6,704,547
- Issue date Mar 9, 2004
- Hitachi, Ltd.
- Mikio Kuwahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Charging method and terminal equipment in the information and commu...
- Patent number 6,675,007
- Issue date Jan 6, 2004
- Hitachi, Ltd.
- Tsuyoshi Tamaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Position calculation method and position calculation apparatus
- Patent number 6,671,649
- Issue date Dec 30, 2003
- Hitachi, Ltd.
- Mikio Kuwahara
- G01 - MEASURING TESTING
Information Patent Grant
Method for measuring distance and position using spread spectrum si...
- Patent number 6,657,579
- Issue date Dec 2, 2003
- Hitachi, Ltd.
- Katsuhiko Tsunehara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Contactless IC card
- Patent number 6,570,490
- Issue date May 27, 2003
- Hitachi, Ltd.
- Takeshi Saitoh
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Position calculation method and position calculation apparatus
- Patent number 6,556,943
- Issue date Apr 29, 2003
- Hitachi, Ltd.
- Mikio Kuwahara
- G01 - MEASURING TESTING
Information Patent Grant
Automatic identification equipment and IC cards
- Patent number 6,527,177
- Issue date Mar 4, 2003
- Hitachi, Ltd.
- Tomoaki Ishifuji
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Automatic identification equipment and IC cards
- Patent number 6,508,400
- Issue date Jan 21, 2003
- Hitachi, Ltd.
- Tomoaki Ishifuji
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method for measuring distance and position using spectrum signal, a...
- Patent number 6,459,402
- Issue date Oct 1, 2002
- Hitachi, Ltd.
- Katsuhiko Tsunehara
- G01 - MEASURING TESTING
Information Patent Grant
Diversity wireless communication method and its wireless communicat...
- Patent number 6,456,830
- Issue date Sep 24, 2002
- Hitachi, Ltd.
- Atsushi Ogino
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Contactless IC card communication system and related method
- Patent number 6,388,562
- Issue date May 14, 2002
- Denso Corporation
- Masahiro Takiguchi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Diversity wireless communication method and its wireless communicat...
- Patent number 6,308,054
- Issue date Oct 23, 2001
- Hitachi, Ltd.
- Atsushi Ogino
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR MEASURING DISTANCE AND POSITION USING SPREAD SPECTRUM SI...
- Publication number 20100103047
- Publication date Apr 29, 2010
- Hitachi, Ltd
- Katsuhiko Tsunehara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Wireless communication system and mobile terminal
- Publication number 20090285184
- Publication date Nov 19, 2009
- Hitachi, Ltd.
- Koji Watanabe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method for measuring distance and position using spread spectrum si...
- Publication number 20080068254
- Publication date Mar 20, 2008
- Katsuhiko Tsunehara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Systems and methods for wireless communication
- Publication number 20070274256
- Publication date Nov 29, 2007
- Hitachi, Ltd.
- Shinji Murai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Radio communication device
- Publication number 20070086400
- Publication date Apr 19, 2007
- Masaaki Shida
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
WIRELESS DATA COMMUNICATION SYSTEM, WIRELESS DATA COMMUNICATION MET...
- Publication number 20070081450
- Publication date Apr 12, 2007
- Shigenori Hayase
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method for measuring distance and position using spread spectrum si...
- Publication number 20050140543
- Publication date Jun 30, 2005
- Hitachi, Ltd.
- Katsuhiko Tsunehara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Wireless communication system and mobile terminal
- Publication number 20050078633
- Publication date Apr 14, 2005
- Koji Watanabe
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Communication method of contactless ID card and integrated circuit...
- Publication number 20040228400
- Publication date Nov 18, 2004
- Hitachi, Ltd.
- Satoshi Tanaka
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Method for measuring distance and position using spread spectrum si...
- Publication number 20040066332
- Publication date Apr 8, 2004
- Hitachi, Ltd.
- Katsuhiko Tsunehara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
System and method for wireless communication using a management ser...
- Publication number 20030236103
- Publication date Dec 25, 2003
- Hitachi, Ltd.
- Tsuyoshi Tamaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Contactless IC card
- Publication number 20030189483
- Publication date Oct 9, 2003
- Hitachi, Ltd.
- Takeshi Saitoh
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Position calculation method and position calculation apparatus
- Publication number 20030191604
- Publication date Oct 9, 2003
- Hitachi, Ltd.
- Mikio Kuwahara
- G01 - MEASURING TESTING
Information Patent Application
Charging method and terminal equipment in the information and commu...
- Publication number 20030054795
- Publication date Mar 20, 2003
- Hitachi, Ltd.
- Tsuyoshi Tamaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Charging method and terminal equipment in the information and commu...
- Publication number 20030054796
- Publication date Mar 20, 2003
- Hitachi, Ltd.
- Tsuyoshi Tamaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method for measuring distance and position using spread spectrum si...
- Publication number 20020149511
- Publication date Oct 17, 2002
- Hitachi, Ltd.
- Katsuhiko Tsunehara
- G01 - MEASURING TESTING
Information Patent Application
Position calculation method and position calculation apparatus
- Publication number 20020147566
- Publication date Oct 10, 2002
- HITACHI LTD.
- Mikio Kuwahara
- G01 - MEASURING TESTING
Information Patent Application
Location detection method, location detection system and location d...
- Publication number 20020132625
- Publication date Sep 19, 2002
- HITACHI LTD.
- Atsushi Ogino
- G01 - MEASURING TESTING
Information Patent Application
Method and apparatus for measurement transmitting time offset of ba...
- Publication number 20020098839
- Publication date Jul 25, 2002
- HITACHI LTD.
- Atsushi Ogino
- G01 - MEASURING TESTING
Information Patent Application
Fixed wireless access system and apparatus therefor
- Publication number 20020032031
- Publication date Mar 14, 2002
- Hitachi, Ltd.
- Atsushi Ogino
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Diversity wireless communication method and its wireless communicat...
- Publication number 20020016156
- Publication date Feb 7, 2002
- Hitachi, Ltd.
- Atsushi Ogino
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Wireless communication base station transmission timing offset corr...
- Publication number 20020009974
- Publication date Jan 24, 2002
- Mikio Kuwahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Digital radio communication system for multi-application
- Publication number 20020006120
- Publication date Jan 17, 2002
- Hideya Suzuki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method of providing location service using CDMA-based cellular phon...
- Publication number 20020004398
- Publication date Jan 10, 2002
- Hitachi, Ltd.
- Atsushi Ogino
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Wireless position measurement terminal and wireless position measur...
- Publication number 20010051527
- Publication date Dec 13, 2001
- Mikio Kuwahara
- G01 - MEASURING TESTING
Information Patent Application
Diversity wireless communication method and its wireless communicat...
- Publication number 20010003088
- Publication date Jun 7, 2001
- Hitachi, Ltd.
- Atsushi Ogino
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Tomoaki Ishifuji

Person

Patents Grantslast 30 patents

Systems and methods for wireless communication using SDMA

Method for measuring distance and position using spread spectrum si...

Method of providing location service using CDMA-based cellular phon...

Method for measuring distance and position using spread spectrum si...

Radio communication device

Method for measuring distance and position using spread spectrum si...

System and method for wireless communication using a management ser...

Digital radio communication system for multi-application

Wireless data communication system, wireless data communication met...

Communication method of contactless ID card and integrated circuit...

Charging method and terminal equipment in the information and commu...

Contactless IC card

Method for measuring distance and position using spread spectrum si...

Method and apparatus for measuring transmitting time offset of a ba...

Location detection method, location detection system and location d...

Communication method of contactless ID card and integrated circuit...

Fixed wireless access system and apparatus therefor

Packet communication system and packet communication apparatus

Wireless communication base station transmission timing offset corr...

Charging method and terminal equipment in the information and commu...

Position calculation method and position calculation apparatus

Method for measuring distance and position using spread spectrum si...

Contactless IC card

Position calculation method and position calculation apparatus

Automatic identification equipment and IC cards

Automatic identification equipment and IC cards

Method for measuring distance and position using spectrum signal, a...

Diversity wireless communication method and its wireless communicat...

Contactless IC card communication system and related method

Diversity wireless communication method and its wireless communicat...

Patents Applicationslast 30 patents

METHOD FOR MEASURING DISTANCE AND POSITION USING SPREAD SPECTRUM SI...

Wireless communication system and mobile terminal

Method for measuring distance and position using spread spectrum si...

Systems and methods for wireless communication

Radio communication device

WIRELESS DATA COMMUNICATION SYSTEM, WIRELESS DATA COMMUNICATION MET...

Method for measuring distance and position using spread spectrum si...

Wireless communication system and mobile terminal

Communication method of contactless ID card and integrated circuit...

Method for measuring distance and position using spread spectrum si...

System and method for wireless communication using a management ser...

Contactless IC card

Position calculation method and position calculation apparatus

Charging method and terminal equipment in the information and commu...

Charging method and terminal equipment in the information and commu...

Method for measuring distance and position using spread spectrum si...

Position calculation method and position calculation apparatus

Location detection method, location detection system and location d...

Method and apparatus for measurement transmitting time offset of ba...

Fixed wireless access system and apparatus therefor

Diversity wireless communication method and its wireless communicat...

Wireless communication base station transmission timing offset corr...

Digital radio communication system for multi-application

Method of providing location service using CDMA-based cellular phon...

Wireless position measurement terminal and wireless position measur...

Diversity wireless communication method and its wireless communicat...