Hiroyasu Ishikawa

Person

Warabi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Transmitter device and transmitting method using OFDM and MC-CDMA
- Patent number 7,391,715
- Issue date Jun 24, 2008
- KDDI Corporation
- Kyesan Lee
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Frequency error correction device and OFDM receiver with the device
- Patent number 7,336,742
- Issue date Feb 26, 2008
- KDDI Corporation
- Takeo Ohseki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Radio LAN master station system
- Patent number 7,123,941
- Issue date Oct 17, 2006
- KDDI R&D Laboratories Inc.
- Tadayuki Fukuhara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Spread spectrum communication method and spread spectrum communicat...
- Patent number 6,785,248
- Issue date Aug 31, 2004
- DDI Corp.
- Naoki Fuke
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Surface acoustic wave-matched filter and differential detector for...
- Patent number 6,629,121
- Issue date Sep 30, 2003
- Hiroyasu Ishikawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method for determining position of mobile earth station in satellit...
- Patent number 6,166,687
- Issue date Dec 26, 2000
- Kokusai Denshin Denwa Kabushiki Kaisha
- Hiroyasu Ishikawa
- G01 - MEASURING TESTING
Information Patent Grant
Timing recovery and tracking method and apparatus for data signals
- Patent number 6,154,506
- Issue date Nov 28, 2000
- Kokusai Denshin Denwa Co., Ltd.
- Hiroyasu Ishikawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Spread spectrum communication system
- Patent number 6,104,746
- Issue date Aug 15, 2000
- Kokusai Denshin Denwa Co., Ltd.
- Hiroyasu Ishikawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Spread spectrum communications system
- Patent number 5,974,082
- Issue date Oct 26, 1999
- Kokusai Denshin Denwa Co., Ltd.
- Hiroyasu Ishikawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for determining position of mobile earth station in satellit...
- Patent number 5,969,669
- Issue date Oct 19, 1999
- Kokusai Denshin Denwa Kabushiki Kaisha
- Hiroyasu Ishikawa
- G01 - MEASURING TESTING
Information Patent Grant
Unique word recognition system
- Patent number 5,774,462
- Issue date Jun 30, 1998
- Kokusai Denshin Denwa Co., Ltd.
- Hiroyasu Ishikawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Energy dispersal method for TDMA carrier
- Patent number 5,751,703
- Issue date May 12, 1998
- Kokusai Denshin Denwa Co., Ltd.
- Hideo Kobayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Macrocell-microcell communication system with minimal mobile channe...
- Patent number 5,640,678
- Issue date Jun 17, 1997
- Kokusai Denshin Denwa Kabushiki Kaisha
- Hiroyasu Ishikawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Compensation of frequency offset
- Patent number 5,613,193
- Issue date Mar 18, 1997
- Kokusai Denshin Denwa Co. Ltd.
- Hiroyasu Ishikawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Satellite/land mobile communication system integration scheme
- Patent number 5,490,284
- Issue date Feb 6, 1996
- Kokusai Denshin Denwa Kabushiki Kaisha
- Yasuhiko Itoh
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Selection diversity system using decision feedback equalizer in dig...
- Patent number 5,455,844
- Issue date Oct 3, 1995
- Kokusai Denshin Denwa Kabushiki Kaisha
- Hiroyasu Ishikawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Transmitter device and transmitting method using OFDM nd MC-CDMA
- Publication number 20040141481
- Publication date Jul 22, 2004
- KDDI CORPORATION
- Kyesan Lee
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Transmitter device and receiver device adopting space time transmit...
- Publication number 20040116077
- Publication date Jun 17, 2004
- KDDI CORPORATION
- Kyesan Lee
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Frequency error correction device and OFDM receiver with the device
- Publication number 20030210646
- Publication date Nov 13, 2003
- KDDI CORPORATION
- Takeo Ohseki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Repeater for radio communication system
- Publication number 20030211827
- Publication date Nov 13, 2003
- Kenya Yonezawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Radio LAN master station system
- Publication number 20020128046
- Publication date Sep 12, 2002
- KDDI R&D Laboratories Inc.
- Tadayuki Fukuhara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Spread spectrum communication methods and spread spectrum communica...
- Publication number 20010004357
- Publication date Jun 21, 2001
- DDI CORPORATION
- Naoki Fuke
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Hiroyasu Ishikawa

Person

Patents Grantslast 30 patents

Transmitter device and transmitting method using OFDM and MC-CDMA

Frequency error correction device and OFDM receiver with the device

Radio LAN master station system

Spread spectrum communication method and spread spectrum communicat...

Surface acoustic wave-matched filter and differential detector for...

Method for determining position of mobile earth station in satellit...

Timing recovery and tracking method and apparatus for data signals

Spread spectrum communication system

Spread spectrum communications system

Method for determining position of mobile earth station in satellit...

Unique word recognition system

Energy dispersal method for TDMA carrier

Macrocell-microcell communication system with minimal mobile channe...

Compensation of frequency offset

Satellite/land mobile communication system integration scheme

Selection diversity system using decision feedback equalizer in dig...

Patents Applicationslast 30 patents

Transmitter device and transmitting method using OFDM nd MC-CDMA

Transmitter device and receiver device adopting space time transmit...

Frequency error correction device and OFDM receiver with the device

Repeater for radio communication system

Radio LAN master station system

Spread spectrum communication methods and spread spectrum communica...