Inventor · disambiguated record
Hiroyuki Kitajima
Also filed as: KITAJIMA HIROYUKI
58 granted patents·11 pending applications·2,975 citations·filing 1980–2018
99Inventor score
Top patents by PatentIndex Score
69 records- 0199US5193154ABuffered peripheral system and method for backing up and retrieving data to and from backup memory deviceHITACHI LTD·Filed 1991·Granted Mar 9, 1993·1.5k cites·5 claims
- 0296US4495570AProcessing request allocator for assignment of loads in a distributed processing systemHITACHI LTD·Filed 1982·Granted Jan 22, 1985·227 cites·11 claims
- 0394US7861034B2Load distribution of multiple disksHITACHI LTD·Filed 2007·Granted Dec 28, 2010·33 cites·4 claims
- 0492US5638508AMethod and a system for processing a log recordHITACHI LTD·Filed 1994·Granted Jun 10, 1997·197 cites·9 claims
- 0592US5253351AMemory controller with a cache memory and control method of cache memory including steps of determining memory access threshold valuesHITACHI LTD·Filed 1989·Granted Oct 12, 1993·132 cites·31 claims
- 0689US4967341AMethod and apparatus for processing data baseHITACHI LTD·Filed 1989·Granted Oct 30, 1990·77 cites·15 claims
- 0787US4542458AMethod of and apparatus for assigning software resources to memory devicesHITACHI LTD·Filed 1983·Granted Sep 17, 1985·101 cites·12 claims
- 0885USD758293STread portion of an automobile tireBRIDGESTONE CORP·Filed 2014·Granted Jun 7, 2016·29 cites·1 claims
- 0983US5388016AMagnetic tape data management method and apparatusHITACHI LTD·Filed 1992·Granted Feb 7, 1995·37 cites·51 claims
- 1079USD763179STread portion of an automobile tireBRIDGESTONE CORP·Filed 2015·Granted Aug 9, 2016·19 cites·1 claims
- 1178US6728832B2Distribution of I/O requests across multiple disk unitsHITACHI LTD·Filed 2001·Granted Apr 27, 2004·19 cites·14 claims
- 1274US4916655AMethod and apparatus for retrieval of a search stringHITACHI LTD·Filed 1987·Granted Apr 10, 1990·54 cites·4 claims
- 1372USD758290STread portion of an automobile tireBRIDGESTONE CORP·Filed 2014·Granted Jun 7, 2016·16 cites·1 claims
- 1471US6327673B1Storage unit subsystemHITACHI LTD·Filed 2000·Granted Dec 4, 2001·10 cites·1 claims
- 1571US5835938ARead/write control for grouped disk storage including parallel accessHITACHI LTD·Filed 1997·Granted Nov 10, 1998·39 cites·6 claims
- 1670USD748046STread portion of an automobile tireBRIDGESTONE CORP·Filed 2014·Granted Jan 26, 2016·15 cites·1 claims
- 1770US7498855B2Power-on clear circuitNEC ELECTRONICS CORP·Filed 2005·Granted Mar 3, 2009·6 cites·6 claims
- 1869US5257352AInput/output control method and systemHITACHI LTD·Filed 1990·Granted Oct 26, 1993·52 cites·25 claims
- 1968US9209926B2Communication system and method thereforFUJITSU LTD·Filed 2013·Granted Dec 8, 2015·2 cites·6 claims
- 2067US6631443B1Disk storage system having capability for performing parallel read operationHITACHI LTD·Filed 2000·Granted Oct 7, 2003·8 cites·8 claims
- 2166US5680574AData distribution utilizing a master disk unit for fetching and for writing to remaining disk unitsHITACHI LTD·Filed 1994·Granted Oct 21, 1997·28 cites·47 claims
- 2264US7254674B2Distribution of I/O requests across multiple disk unitsHITACHI LTD·Filed 2004·Granted Aug 7, 2007·7 cites·6 claims
- 2364US5682396AControl unit in storage subsystem with improvement of redundant data updatingHITACHI LTD·Filed 1992·Granted Oct 28, 1997·26 cites·27 claims
- 2461US6938125B2Storage system with data prefetch functionHITACHI LTD·Filed 2003·Granted Aug 30, 2005·4 cites·6 claims
- 2559US5497472ACache control method and apparatus for storing data in a cache memory and for indicating completion of a write request irrespective of whether a record to be accessed exists in an external storage unitHITACHI LTD·Filed 1995·Granted Mar 5, 1996·26 cites·20 claims
- 2658USD748571STread portion of an automobile tireBRIDGESTONE CORP·Filed 2014·Granted Feb 2, 2016·9 cites·1 claims
- 2758US6532549B2Storage unit subsystemHITACHI LTD·Filed 2001·Granted Mar 11, 2003·3 cites·6 claims
- 2857US6108750ASimultaneous read/write control of data storage disk unitsHITACHI LTD·Filed 1998·Granted Aug 22, 2000·20 cites·4 claims
- 2955US7320089B2Storage unit subsystemHITACHI LTD·Filed 2004·Granted Jan 15, 2008·3 cites·15 claims
- 3055US5694576ACache control by adding record identification information to partial write requestHITACHI LTD·Filed 1995·Granted Dec 2, 1997·21 cites·28 claims
- 3154US6518804B2Semiconductor integrated circuit deviceNEC CORP·Filed 2002·Granted Feb 11, 2003·6 cites·11 claims
- 3254US5307473AController for storage unit and method of controlling storage unitHITACHI LTD·Filed 1992·Granted Apr 26, 1994·19 cites·10 claims
- 3354US5239644AData preloading method and system for using a bufferHITACHI LTD·Filed 1991·Granted Aug 24, 1993·30 cites·3 claims
- 3452US5418929AController for storage unit and method of controlling storage unitHITACHI LTD·Filed 1994·Granted May 23, 1995·16 cites·18 claims
- 3551US6874101B2Storage unit subsystemHITACHI LTD·Filed 2003·Granted Mar 29, 2005·1 cites·3 claims
- 3651US6148367AController limiting modification of cache based upon amount of dirty lines in the cacheHITACHI LTD·Filed 1996·Granted Nov 14, 2000·16 cites·4 claims
- 3751US5410666AOn-line dumping system and disk sub systemHITACHI LTD·Filed 1990·Granted Apr 25, 1995·20 cites·12 claims
- 3850USD751031STread portion of an automobile tireBRIDGESTONE CORP·Filed 2014·Granted Mar 8, 2016·6 cites·1 claims
- 3950US2005240728A1Read-write control of data storage disk unitsHITACHI LTD·Filed 2005·Application pending·0 cites
- 4049US9166739B2Error correction processing circuit and error correction processing methodSAKAI TOSHIHARU·Filed 2012·Granted Oct 20, 2015·1 cites·6 claims
- 4149US5917999AStorage unit subsystemHITACHI LTD·Filed 1997·Granted Jun 29, 1999·13 cites·5 claims
- 4248US5261065AInput/output processing method in a database management systemHITACHI LTD·Filed 1990·Granted Nov 9, 1993·24 cites·19 claims
- 4347US7082496B2Cache control method and apparatusHITACHI LTD·Filed 2003·Granted Jul 25, 2006·0 cites·10 claims
- 4447US6757839B2Storage unit subsystemHITACHI LTD·Filed 2002·Granted Jun 29, 2004·0 cites·7 claims
- 4545US5606684AOn-line dumping system and disk sub-systemHITACHI LTD·Filed 1994·Granted Feb 25, 1997·14 cites·7 claims
- 4642US9203603B2Communication system, frame synchronization detection apparatus, and frame synchronization detection methodFUJITSU LTD·Filed 2012·Granted Dec 1, 2015·0 cites·3 claims
- 4741US8588256B2Transmission apparatus and signal mapping methodKATAGIRI TORU·Filed 2010·Granted Nov 19, 2013·0 cites·10 claims
- 4841US4926324AI/O control system and methodHITACHI LTD·Filed 1989·Granted May 15, 1990·12 cites·22 claims
- 4941US2009232140A1Packet transmission apparatus and methodKITAJIMA HIROYUKI·Filed 2009·Application pending·0 cites
- 5040US4431100ATorque fluctuation damperKOMATSU MFG CO LTD·Filed 1980·Granted Feb 14, 1984·11 cites·1 claims
Showing the top 50 of 69 patent records by PatentIndex Score.
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