Inventor · disambiguated record
Nobukazu Doi
Also filed as: DOI NOBUKAZU
91 granted patents·7 pending applications·3,148 citations·filing 1985–2014
99Inventor score
Files withHITACHI LTD75FIPA FROHWITTER IP AG7HITACHI COMM TECH LTD5ESMAILZADEH RIAZ3ESMAILZADEH RAIZ1
Top patents by PatentIndex Score
98 records- 0199US7082321B2Radio communication system using adaptive array antennaHITACHI LTD·Filed 2003·Granted Jul 25, 2006·213 cites·4 claims
- 0298US5870393ASpread spectrum communication system and transmission power control method thereforHITACHI LTD·Filed 1996·Granted Feb 9, 1999·267 cites·57 claims
- 0397US6704547B2Wireless communication base station transmission timing offset correction systemHITACHI LTD·Filed 2001·Granted Mar 9, 2004·78 cites·8 claims
- 0497US5559790ASpread spectrum communication system and transmission power control method thereforHITACHI LTD·Filed 1995·Granted Sep 24, 1996·238 cites·26 claims
- 0595US6570865B2CDMA mobile communications system and communication methodHITACHI LTD·Filed 2001·Granted May 27, 2003·94 cites·10 claims
- 0695US6269088B1CDMA mobile communication system and communication methodHITACHI LTD·Filed 1996·Granted Jul 31, 2001·181 cites·31 claims
- 0794US6141335ARadio communication systemHITACHI LTD·Filed 1997·Granted Oct 31, 2000·202 cites·3 claims
- 0893US6647276B1Antenna unit and radio base station therewithHITACHI LTD·Filed 2000·Granted Nov 11, 2003·56 cites·7 claims
- 0993US6483816B2CDMA communication system and its transmission power control methodHITACHI LTD·Filed 2001·Granted Nov 19, 2002·61 cites·6 claims
- 1091US6597678B1Radio communication system using adaptive array antennaHITACHI LTD·Filed 1999·Granted Jul 22, 2003·106 cites·5 claims
- 1191US6459402B1Method for measuring distance and position using spectrum signal, and an equipment using the methodHITACHI LTD·Filed 2000·Granted Oct 1, 2002·66 cites·21 claims
- 1290US6900753B2Method for measuring distance and position using spread spectrum signal, and an equipment using the methodHITACHI LTD·Filed 2003·Granted May 31, 2005·57 cites·17 claims
- 1390US6804216B1Code division multiple access communication method using dynamic code assignment, and a base station performing the methodHITACHI LTD·Filed 2000·Granted Oct 12, 2004·63 cites·21 claims
- 1490US6731905B2Fixed wireless access system and apparatus thereforHITACHI LTD·Filed 2001·Granted May 4, 2004·47 cites·6 claims
- 1590US6694142B1Wireless terminal positioning method and apparatusHITACHI LTD·Filed 2000·Granted Feb 17, 2004·70 cites·2 claims
- 1690US5047852AAdaptive transform encoder for digital image signal in recording/reproducing apparatusHITACHI LTD·Filed 1989·Granted Sep 10, 1991·77 cites·8 claims
- 1788US6307844B1CDMA communication system and its transmission power control methodHITACHI LTD·Filed 1997·Granted Oct 23, 2001·90 cites·25 claims
- 1888US4653052AMethod for decoding double-encoding codes and apparatus using the sameHITACHI LTD·Filed 1985·Granted Mar 24, 1987·52 cites·6 claims
- 1986US7013147B1Wireless positioning means, wireless positioning apparatus and mobile position control center apparatusHITACHI LTD·Filed 2000·Granted Mar 14, 2006·44 cites·6 claims
- 2085US6546260B2Transmission power control method and apparatus for mobile communication systemHITACHI LTD·Filed 2000·Granted Apr 8, 2003·26 cites·12 claims
- 2185US6393013B1CDMA mobile communication system and communication methodHITACHI LTD·Filed 2000·Granted May 21, 2002·27 cites·3 claims
- 2284US6920122B1Control method of channel assignHITACHI LTD·Filed 2000·Granted Jul 19, 2005·40 cites·7 claims
- 2384US4764927ACode error correcting methodHITACHI LTD·Filed 1986·Granted Aug 16, 1988·41 cites·5 claims
- 2482US6597676B1CDMA communication system and methodHITACHI LTD·Filed 2000·Granted Jul 22, 2003·18 cites·14 claims
- 2582US5943329ACode division multiple access mobile communication systemHITACHI LTD·Filed 1996·Granted Aug 24, 1999·50 cites·12 claims
- 2681US7167712B2Method, system, and apparatus for detecting a position of a terminal in a networkHITACHI LTD·Filed 2003·Granted Jan 23, 2007·39 cites·22 claims
- 2780US6377613B1Communication apparatus for code division multiple accessing mobile communications systemHITACHI LTD·Filed 1999·Granted Apr 23, 2002·63 cites·15 claims
- 2878US7154875B2CDMA mobile communication system and communication methodHITACHI LTD·Filed 2001·Granted Dec 26, 2006·15 cites·9 claims
- 2977US6335924B1Spread spectrum communication system and transmission power control method thereforHITACHI LTD·Filed 1998·Granted Jan 1, 2002·35 cites·8 claims
- 3077US6175744B1Transmission power control method and apparatus for mobile communication systemHITACHI LTD·Filed 1997·Granted Jan 16, 2001·54 cites·12 claims
- 3177US5499395ACellular mobile communication system having apparatus for changing boundaries of cells according to traffic conditionHITACHI LTD·Filed 1994·Granted Mar 12, 1996·103 cites·15 claims
- 3276US6141337ASpread spectrum communication systemHITACHI LTD·Filed 1997·Granted Oct 31, 2000·54 cites·6 claims
- 3376US4963992AApparatus for recording/reproducing digital video signals in both a standard mode and a long playing modeHITACHI LTD·Filed 1989·Granted Oct 16, 1990·30 cites·4 claims
- 3475US6754255B1Mobile terminal, a base station, and a synchronization control methodHITACHI LTD·Filed 2000·Granted Jun 22, 2004·14 cites·25 claims
- 3574US6456609B2Code division multiple access mobile communication systemHITACHI LTD·Filed 2001·Granted Sep 24, 2002·13 cites·13 claims
- 3674US5666352ACDMA mobile communication system and method with improved phase correction featuresHITACHI LTD·Filed 1995·Granted Sep 9, 1997·51 cites·6 claims
- 3773US7251230B2CDMA mobile communication system and communication methodHITACHI COMM TECH LTD·Filed 2001·Granted Jul 31, 2007·8 cites·10 claims
- 3872US7203462B2Antenna unit and radio base station therewithHITACHI LTD·Filed 2003·Granted Apr 10, 2007·10 cites·8 claims
- 3971US6675007B2Charging method and terminal equipment in the information and communication network systemHITACHI LTD·Filed 2002·Granted Jan 6, 2004·14 cites·4 claims
- 4071US6657579B2Method for measuring distance and position using spread spectrum signal, and an equipment using the methodHITACHI LTD·Filed 2002·Granted Dec 2, 2003·17 cites·5 claims
- 4171US5930244ACDMA Communication system and methodHITACHI LTD·Filed 1997·Granted Jul 27, 1999·46 cites·19 claims
- 4270US7421283B2Transmission power control method and apparatus for mobile communication systemHITACHI COMM TECH LTD·Filed 2006·Granted Sep 2, 2008·2 cites·4 claims
- 4370US6813261B1Method of mobile communication and apparatus thereforHITACHI LTD·Filed 2000·Granted Nov 2, 2004·11 cites·36 claims
- 4468US7016665B2Charging method and terminal equipment in the information and communication network systemHITACHI LTD·Filed 2002·Granted Mar 21, 2006·11 cites·4 claims
- 4568US6628635B2Spread spectrum communication system and transmission power control method thereforHITACHI LTD·Filed 2001·Granted Sep 30, 2003·6 cites·7 claims
- 4667US7609197B2Method for measuring distance and position using spread spectrum signal, and an equipment using the methodHITACHI LTD·Filed 2005·Granted Oct 27, 2009·4 cites·16 claims
- 4767US7587174B2Antenna unit and radio base station therewithHITACHI LTD·Filed 2007·Granted Sep 8, 2009·2 cites·7 claims
- 4866US7353032B2Method, system, and apparatus for detecting a position of a terminal in a networkHITACHI LTD·Filed 2006·Granted Apr 1, 2008·5 cites·7 claims
- 4966US6111869AMethod of mobile communication and apparatus thereforHITACHI LTD·Filed 1997·Granted Aug 29, 2000·27 cites·31 claims
- 5065US6879575B1Code division multiple access mobile communication systemHITACHI LTD·Filed 2000·Granted Apr 12, 2005·5 cites·8 claims
Showing the top 50 of 98 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →