Inventor
ISHIKAWA HIROYASU
JP28 patents
⚠️ This page may combine multiple inventors who share the name “ISHIKAWA HIROYASU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
KOKUSAI DENSHIN DENWA CO LTD
13 patentsUS5613193AMar 18, 1997
Compensation of frequency offset
KOKUSAI DENSHIN DENWA CO LTD153 citations99
US5640678AJun 17, 1997
Macrocell-microcell communication system with minimal mobile channel hand-off
KOKUSAI DENSHIN DENWA CO LTD155 citations98
US5490284AFeb 6, 1996
Satellite/land mobile communication system integration scheme
KOKUSAI DENSHIN DENWA CO LTD140 citations98
US5969669AOct 19, 1999
Method for determining position of mobile earth station in satellite communication system
KOKUSAI DENSHIN DENWA CO LTD53 citations96
US5455844AOct 3, 1995
Selection diversity system using decision feedback equalizer in digital mobile telecommunication systems
KOKUSAI DENSHIN DENWA CO LTD93 citations96
US5345245ASep 6, 1994
Differential data signal transmission technique
KOKUSAI DENSHIN DENWA CO LTD98 citations96
US5774462AJun 30, 1998
Unique word recognition system
KOKUSAI DENSHIN DENWA CO LTD24 citations93
US6166687ADec 26, 2000
Method for determining position of mobile earth station in satellite communication system
KOKUSAI DENSHIN DENWA CO LTD23 citations92
US5974082AOct 26, 1999
Spread spectrum communications system
KOKUSAI DENSHIN DENWA CO LTD25 citations92
US6104746AAug 15, 2000
Spread spectrum communication system
KOKUSAI DENSHIN DENWA CO LTD19 citations84
US6154506ANov 28, 2000
Timing recovery and tracking method and apparatus for data signals
KOKUSAI DENSHIN DENWA CO LTD11 citations74
US5751703AMay 12, 1998
Energy dispersal method for TDMA carrier
KOKUSAI DENSHIN DENWA CO LTD13 citations74
US5588026ADec 24, 1996
Method of compensating phase shift keying frequency offset
KOKUSAI DENSHIN DENWA CO LTD9 citations74
HITACHI KOKI KK
5 patentsUS4675999AJun 30, 1987
Portable power tool equipped with dust collector
HITACHI KOKI KK86 citations95
US6026713AFeb 22, 2000
Pneumatically operated screw driver
HITACHI KOKI KK28 citations92
US5558476ASep 24, 1996
Dual-motor-driven drilling machine and method of controlling currents flowing in motors
HITACHI KOKI KK48 citations92
US5558571ASep 24, 1996
Portable grinder
HITACHI KOKI KK43 citations89
US4370579AJan 25, 1983
Power tool having a printed circuit board
HITACHI KOKI KK36 citations89
KDDI CORP
3 patentsUS7391715B2Jun 24, 2008
Transmitter device and transmitting method using OFDM and MC-CDMA
KDDI CORP25 citations89
US7336742B2Feb 26, 2008
Frequency error correction device and OFDM receiver with the device
KDDI CORP12 citations82
US7123941B2Oct 17, 2006
Radio LAN master station system
KDDI CORP3 citations60