Inventor · disambiguated record
Hisashi Takamatsu
Also filed as: TAKAMATSU HISASHI
29 granted patents·553 citations·filing 1986–2012
97Inventor score
Top patents by PatentIndex Score
29 records- 0184US6744958B2Apparatus and method of compensating for wavelength dispersion of optical transmission lineFUJITSU LTD·Filed 2001·Granted Jun 1, 2004·24 cites·91 claims
- 0284US6473867B2Parity storage unit, in a disk array system, for generating updated parity data from received data recordsHITACHI LTD·Filed 2001·Granted Oct 29, 2002·28 cites·7 claims
- 0382US6966001B2Computing system and data decryption method and computer system with remote copy facilityHITACHI LTD·Filed 2001·Granted Nov 15, 2005·36 cites·15 claims
- 0478US5119488AInput/output system implementing several access paths for rerouting data in the event one path failsHITACHI LTD·Filed 1989·Granted Jun 2, 1992·59 cites·16 claims
- 0574US7626825B2Optical transmitter moduleOPNEXT JAPAN INC·Filed 2007·Granted Dec 1, 2009·5 cites·8 claims
- 0673US7953940B2Storage system and control method thereofHITACHI LTD·Filed 2008·Granted May 31, 2011·5 cites·12 claims
- 0772US8214606B2Storage system and control method thereofKEZUKA TEIKO·Filed 2011·Granted Jul 3, 2012·3 cites·12 claims
- 0872US7765602B2Storage on-demand system, and method for processing data in the sameHITACHI LTD·Filed 2006·Granted Jul 27, 2010·3 cites·6 claims
- 0971US4807180AMultiple control system for disk storage and method for realizing sameHITACHI LTD·Filed 1986·Granted Feb 21, 1989·43 cites·11 claims
- 1071US4792917AControl apparatus for simultaneous data transferHITACHI LTD·Filed 1986·Granted Dec 20, 1988·42 cites·20 claims
- 1168US5905995ADisk array subsystem with self-reallocation of logical volumes for reduction of I/O processing loadsHITACHI LTD·Filed 1996·Granted May 18, 1999·52 cites·8 claims
- 1268US5734812AStorage unit with parity generation function and storage systems using storage unit with parity generation analyzationHITACHI LTD·Filed 1992·Granted Mar 31, 1998·34 cites·8 claims
- 1368US5223975APolarization beam coupler including a splitter for producing an output monitor beamFUJITSU LTD·Filed 1989·Granted Jun 29, 1993·25 cites·11 claims
- 1467US6738182B2Optical fiber amplifierFUJITSU LTD·Filed 2001·Granted May 18, 2004·8 cites·38 claims
- 1567US5537244ALight amplifierFUJITSU LTD·Filed 1995·Granted Jul 16, 1996·31 cites·17 claims
- 1666US5457791AStorage system and method of controlHITACHI LTD·Filed 1993·Granted Oct 10, 1995·50 cites·18 claims
- 1759US4926272AMethod for controlling a rotating storage unitHITACHI LTD·Filed 1987·Granted May 15, 1990·11 cites·20 claims
- 1854US5764400AOptical modulatorFUJITSU LTD·Filed 1997·Granted Jun 9, 1998·23 cites·18 claims
- 1951US5125053AOptical coupler ultizing prismsFUJITSU LTD·Filed 1991·Granted Jun 23, 1992·15 cites·14 claims
- 2047US7397981B2Apparatus and method of compensating for wavelength dispersion of optical transmission lineFUJITSU LTD·Filed 2004·Granted Jul 8, 2008·0 cites·13 claims
- 2146US8378289B2Optical receiver module and manufacturing method with a shifted and angled light receiving elementOCLARO JAPAN INC·Filed 2009·Granted Feb 19, 2013·0 cites·5 claims
- 2246US6032263AParity storage unit, in a disk array system, for generating updated parity data from received data recordsHITACHI LTD·Filed 1998·Granted Feb 29, 2000·12 cites·3 claims
- 2346US4805048AMethod for controlling to keep off defects on magnetic disksHITACHI LTD·Filed 1987·Granted Feb 14, 1989·6 cites·1 claims
- 2442US6209107B1Parity storage unit, in a disk array system, for generating updated parity data from received data recordsHITACHI LTD·Filed 1999·Granted Mar 27, 2001·9 cites·5 claims
- 2542US5826002AParity storage unit, in a disk array system for generating updated parity data from received data recordsHITACHI LTD·Filed 1996·Granted Oct 20, 1998·9 cites·4 claims
- 2642US5283842AOperating point trimming method for optical waveguide modulator and switchFUJITSU LTD·Filed 1991·Granted Feb 1, 1994·10 cites·12 claims
- 2742US5015055APolarization couplerFUJITSU LTD·Filed 1990·Granted May 14, 1991·10 cites·11 claims
- 2841US8619351B2Optical phase shifter and demodulatorTAKAMATSU HISASHI·Filed 2012·Granted Dec 31, 2013·0 cites·12 claims
- 2930US5315451ARotating storage track format emulationHITACHI LTD·Filed 1991·Granted May 24, 1994·0 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →