Inventor · disambiguated record
Akihiko Hirano
Also filed as: HIRANO AKIHIKO
43 granted patents·13 pending applications·857 citations·filing 1990–2025
98Inventor score
Files withHITACHI LTD20HOSHIZAKI ELECTRIC CO LTD16HITACHI GE NUCLEAR ENERGY LTD3INOUE KAZUHIKO3KONDOU NAOSHI3
Top patents by PatentIndex Score
56 records- 0195US5633766AMagnetic disk storage apparatus with phase sync circuit having controllable response characteristicsHITACHI LTD·Filed 1994·Granted May 27, 1997·72 cites·12 claims
- 0293US7168262B2Ice making machineHOSHIZAKI ELECTRIC CO LTD·Filed 2005·Granted Jan 30, 2007·30 cites·17 claims
- 0393US5404250AMagnetic disk storage apparatus with phase sync circuit having controllable response characteristicHITACHI LTD·Filed 1994·Granted Apr 4, 1995·59 cites·2 claims
- 0491US7975497B2Refrigeration unit having variable performance compressor operated based on high-pressure side pressureHOSHIZAKI ELECTRIC CO LTD·Filed 2007·Granted Jul 12, 2011·27 cites·26 claims
- 0591US6697976B1Performance evaluation method, performance evaluation system, and information storage apparatus using sameHITACHI LTD·Filed 2000·Granted Feb 24, 2004·32 cites·6 claims
- 0687US8209991B2Cooling storage and method of operating the sameKONDOU NAOSHI·Filed 2007·Granted Jul 3, 2012·23 cites·15 claims
- 0787US8136365B2Cooling apparatus having a variable speed compressor with speed limited on the basis of a sensed performance parameterKAGA SHINICHI·Filed 2007·Granted Mar 20, 2012·17 cites·6 claims
- 0886US6335841B1Coding apparatus and coding methodHITACHI LTD·Filed 2000·Granted Jan 1, 2002·17 cites·21 claims
- 0984US7775058B2Cooler and refrigeratorHOSHIZAKI ELECTRIC CO LTD·Filed 2006·Granted Aug 17, 2010·16 cites·3 claims
- 1084US6661594B2Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuitHITACHI LTD·Filed 2002·Granted Dec 9, 2003·14 cites·13 claims
- 1183US6334201B1Decoding circuit and information processing apparatusHITACHI LTD·Filed 1998·Granted Dec 25, 2001·33 cites·7 claims
- 1281US5818655ASignal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuitHITACHI LTD·Filed 1995·Granted Oct 6, 1998·30 cites·35 claims
- 1380US5999353AMagnetic disk storage apparatus with phase sync circuit having controllable response characteristicHITACHI LTD·Filed 1997·Granted Dec 7, 1999·28 cites·24 claims
- 1479US7908039B2Cooling storage cabinet and method of operating the sameHOSHIZAKI ELECTRIC CO LTD·Filed 2007·Granted Mar 15, 2011·9 cites·9 claims
- 1575US7444829B2Automatic ice making machineHOSHIZAKI ELECTRIC CO LTD·Filed 2004·Granted Nov 4, 2008·33 cites·2 claims
- 1672US7199955B2Decoding apparatus and decoding methodHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Apr 3, 2007·6 cites·15 claims
- 1772US6115495AImage extraction method and apparatus, and image recognition method and apparatus for extracting/recognizing specific images from input image signalsRICOH KK·Filed 1997·Granted Sep 5, 2000·75 cites·22 claims
- 1871US6704154B2Decoding apparatus and decoding methodHITACHI LTD·Filed 2001·Granted Mar 9, 2004·6 cites·15 claims
- 1971US5940416ADigital signal decoding apparatus and a decoding method used thereinHITACHI LTD·Filed 1997·Granted Aug 17, 1999·32 cites·9 claims
- 2069US9253824B2Steam generatorINOUE KAZUHIKO·Filed 2009·Granted Feb 2, 2016·5 cites·5 claims
- 2169US2025137970A1Ultrasonic inspection methodHITACHI GE NUCLEAR ENERGY LTD·Filed 2024·Application pending·0 cites
- 2268US6931872B2Operation control device for cooling apparatusHOSHIZAKI DENKI KABUSKI KAISHA·Filed 2004·Granted Aug 23, 2005·18 cites·19 claims
- 2368US6725418B2Decoding circuit using path sequence including feed-back type path sequence storing blocksHITACHI LTD·Filed 2001·Granted Apr 20, 2004·13 cites·2 claims
- 2468US6104331AReproduced signal processing method, reproduced signal processing circuit, and a magnetic storage apparatusHITACHI LTD·Filed 1998·Granted Aug 15, 2000·21 cites·27 claims
- 2567US7743618B2Auger type ice making machineHOSHIZAKI ELECTRIC CO LTD·Filed 2009·Granted Jun 29, 2010·4 cites·6 claims
- 2665US5448424AAGC circuit and recording and reproducing apparatus using AGC circuitHITACHI LTD·Filed 1994·Granted Sep 5, 1995·21 cites·8 claims
- 2764US8474280B2Refrigerating storage cabinet and control method for compressor thereofKONDOU NAOSHI·Filed 2007·Granted Jul 2, 2013·2 cites·13 claims
- 2862US7730732B2Refrigerating storage cabinetHOSHIZAKI DENKI CO LTD·Filed 2004·Granted Jun 8, 2010·13 cites·12 claims
- 2961US8365543B2Cooling storageHOSHIZAKI ELECTRIC CO LTD·Filed 2007·Granted Feb 5, 2013·1 cites·3 claims
- 3058US5805024APhase lock loop system including a primary phase lock loop apparatus and a high order phase lock loop apparatusHITACHI LTD·Filed 1995·Granted Sep 8, 1998·23 cites·16 claims
- 3158US5553104AInformation recording/reproducing apparatus having a clock timing extraction circuit for extracting a clock signal from an input data signalHITACHI LTD·Filed 1994·Granted Sep 3, 1996·20 cites·12 claims
- 3256US7536867B2Auger-type ice-making machineHOSHIZAKI ELECTRIC CO LTD·Filed 2004·Granted May 26, 2009·12 cites·20 claims
- 3356US2012018424A1Cooking apparatus with steam generating deviceINOUE KAZUHIKO·Filed 2009·Application pending·0 cites
- 3456US2012017769A1Cooking apparatusINOUE KAZUHIKO·Filed 2009·Application pending·0 cites
- 3555US6181820B1Image extraction method and apparatus and image recognition method and apparatus for extracting/recognizing specific images from input image signalsRICOH KK·Filed 1999·Granted Jan 30, 2001·33 cites·6 claims
- 3655US6034998AMethod of and apparatus for detecting phaseHITACHI LTD·Filed 1996·Granted Mar 7, 2000·33 cites·3 claims
- 3755US2010269534A1Ice making drum for drum type ice making machineHOSHIZAKI ELECTRIC CO LTD·Filed 2009·Application pending·0 cites
- 3855US2011138849A1Cooling DeviceHOSHIZAKI ELECTRIC CO LTD·Filed 2009·Application pending·0 cites
- 3953US2009064710A1Cooling apparatusHOSHIZAKI ELECTRIC CO LTD·Filed 2008·Application pending·0 cites
- 4050US2010095691A1Cooling storage and method of operating the sameKONDOU NAOSHI·Filed 2007·Application pending·0 cites
- 4149US5584186ARefrigerant circuit for ice making machine etc.HOSHIZAKI ELECTRIC CO LTD·Filed 1994·Granted Dec 17, 1996·13 cites·2 claims
- 4247US2025271397A1Inspection Apparatus and Inspection MethodHITACHI GE NUCLEAR ENERGY LTD·Filed 2025·Application pending·0 cites
- 4345US2011023522A1Evaporator for a drum type ice making machine and method for manufacturing the evaporatorHOSHIZAKI ELECTRIC CO LTD·Filed 2009·Application pending·0 cites
- 4444US7331189B2Cooling deviceHOSHIZAKI ELECTRIC CO LTD·Filed 2004·Granted Feb 19, 2008·3 cites·6 claims
- 4544US6226417B1Method and system for recognizing a rotated image pattern with reduced processing time and memory spaceRICOH KK·Filed 1998·Granted May 1, 2001·25 cites·10 claims
- 4644US5463504AMagnetic disk system and waveform equalizer thereforHITACHI LTD·Filed 1993·Granted Oct 31, 1995·5 cites·13 claims
- 4743US7246504B2Method of manufacturing refrigerated repositories and sales management system for refrigerated storageHOSHIZAKI DENKI CO LTD·Filed 2004·Granted Jul 24, 2007·0 cites·6 claims
- 4843US5475715ASync data introduction method and systemHITACHI LTD·Filed 1992·Granted Dec 12, 1995·5 cites·21 claims
- 4943US2024219317A1Pipe inspection methodHITACHI GE NUCLEAR ENERGY LTD·Filed 2023·Application pending·0 cites
- 5042US5659309AData recording/reproducing apparatus having viterbi decoder and method thereofHITACHI LTD·Filed 1995·Granted Aug 19, 1997·9 cites·14 claims
Showing the top 50 of 56 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Akihiko Hirano files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →