Inventor · disambiguated record
Yoshihiko Hayashi
Also filed as: HAYASHI YOSHIHIKO
43 granted patents·2 pending applications·1,310 citations·filing 1984–2021
98Inventor score
Top patents by PatentIndex Score
45 records- 0197US6427065B1Power transmission system, IC card and information communication system using IC cardHITACHI LTD·Filed 2000·Granted Jul 30, 2002·257 cites·9 claims
- 0295US6176433B1Reader/writer having coil arrangements to restrain electromagnetic field intensity at a distanceHITACHI LTD·Filed 1998·Granted Jan 23, 2001·262 cites·17 claims
- 0394US8517681B2Wind turbine blade and wind turbine generator having the sameNAKA TAKEHIRO·Filed 2011·Granted Aug 27, 2013·29 cites·18 claims
- 0494US6321067B1Power transmission system IC card and information communication system using IC cardHITACHI LTD·Filed 1997·Granted Nov 20, 2001·217 cites·7 claims
- 0591US6275023B1Semiconductor device tester and method for testing semiconductor deviceHITACHI ELECTR ENG·Filed 2000·Granted Aug 14, 2001·74 cites·16 claims
- 0687US10815974B2Method of repairing or reinforcing wind turbine blade, or attaching accessory part to wind turbine bladeMITSUBISHI HEAVY IND LTD·Filed 2018·Granted Oct 27, 2020·4 cites·12 claims
- 0787US6194993B1Reader and/or writer apparatus, power feeding system, and communication systemHITACHI LTD·Filed 1998·Granted Feb 27, 2001·89 cites·29 claims
- 0886US4788684AMemory test apparatusHITACHI LTD·Filed 1986·Granted Nov 29, 1988·50 cites·15 claims
- 0985US6894489B2Testing apparatus for conducting a test on a magnetic recording medium or a magnetic head, through recording test data on the magnetic recording medium and reproducing recorded test data therefrom by means of the magnetic headHITACHI HIGH TECH ELECT ENG CO·Filed 2003·Granted May 17, 2005·19 cites·4 claims
- 1084US6608550B2Reader and/or writer apparatus, power feeding system, and communication systemHITACHI LTD·Filed 2000·Granted Aug 19, 2003·34 cites·10 claims
- 1177US8082768B2Piercing and rolling plug, method of regenerating such piercing and rolling plug, and equipment line for regenerating such piercing and rolling plugHIDAKA YASUYOSHI·Filed 2009·Granted Dec 27, 2011·12 cites·20 claims
- 1277US6700369B1Testing apparatus of magnetic recording medium or magnetic head including a plurality of analog-to-digital converters which convert reproduced testing data into digital dataHITACHI LTD·Filed 2000·Granted Mar 2, 2004·11 cites·30 claims
- 1375US7411987B2System and method for using an output transformer for laser diode driversMAXIM INTEGRATED PRODUCTS·Filed 2005·Granted Aug 12, 2008·4 cites·17 claims
- 1471US6931040B2System and method for using an output transformer for laser diode driversMAXIM INTEGRATED PRODUCTS·Filed 2003·Granted Aug 16, 2005·9 cites·41 claims
- 1569US7489330B2Scanning type image pick-up apparatus and a scanning type laser beam receive apparatusTOSHIBA KK·Filed 2002·Granted Feb 10, 2009·11 cites·5 claims
- 1667US7003007B2System and method for using an output transformer for packaged laser diode driversMAXIM INTEGRATED PRODUCTS·Filed 2003·Granted Feb 21, 2006·9 cites·13 claims
- 1766US5153883ADistributed timing signal generatorHITACHI LTD·Filed 1989·Granted Oct 6, 1992·21 cites·23 claims
- 1864US7745951B2Wind turbine generatorMITSUBISHI HEAVY IND LTD·Filed 2008·Granted Jun 29, 2010·5 cites·4 claims
- 1963US6625554B2Method and apparatus for determining a magnetic fieldHITACHI LTD·Filed 2001·Granted Sep 23, 2003·10 cites·19 claims
- 2062US10855497B2Semiconductor device including a high-speed receiver being capable of adjusting timing skew for multi-level signal and testing equipment including the receiverSAMSUNG ELECTRONICS CO LTD·Filed 2019·Granted Dec 1, 2020·1 cites·17 claims
- 2162US6448800B1Load current output circuit for electronic device and IC tester using the same load current output circuitHITACHI ELECTR ENG·Filed 2000·Granted Sep 10, 2002·11 cites·13 claims
- 2261US5438259ADigital circuitry apparatusHITACHI LTD·Filed 1994·Granted Aug 1, 1995·35 cites·3 claims
- 2360US8700362B2Wind turbine rotor designing method, wind turbine rotor design support device, wind turbine rotor design support program and wind turbine rotorFUJIOKA HIDEYASU·Filed 2010·Granted Apr 15, 2014·1 cites·8 claims
- 2460US4651334AVariable-ratio frequency dividerHITACHI LTD·Filed 1984·Granted Mar 17, 1987·10 cites·3 claims
- 2559US6829441B2Driver circuit and optical-transmission moduleOPNEXT JAPAN INC·Filed 2003·Granted Dec 7, 2004·5 cites·18 claims
- 2659US6801050B2Driver circuit integrated with load current output circuit, pin electronics and IC tester having thereofHITACHI LTD·Filed 2001·Granted Oct 5, 2004·11 cites·10 claims
- 2756US4973129AOptical fiber elementNIPPON SHEET GLASS CO LTD·Filed 1989·Granted Nov 27, 1990·19 cites·7 claims
- 2855US11930589B2Printed wiring board and method for manufacturing the sameIBIDEN CO LTD·Filed 2021·Granted Mar 12, 2024·0 cites·20 claims
- 2954US7953520B2Cooling fan controller for controlling revolving fan based on fluid temperature and air temperatureCATERPILLAR SARL·Filed 2007·Granted May 31, 2011·2 cites·9 claims
- 3054US5078776AAir bed conveying systemNIPPON SHEET GLASS CO LTD·Filed 1990·Granted Jan 7, 1992·13 cites·4 claims
- 3153US5541553AAmplifier with a function for switching on and off the output signalHITACHI LTD·Filed 1995·Granted Jul 30, 1996·15 cites·23 claims
- 3252US5406198ADigital circuitry apparatusHITACHI LTD·Filed 1993·Granted Apr 11, 1995·14 cites·3 claims
- 3351US7289153B2Scanning type image pick-up apparatus and a scanning type laser beam receive apparatusTOSHIBA KK·Filed 2002·Granted Oct 30, 2007·3 cites·8 claims
- 3449US6424201B2Diode element circuit and switch circuit using the sameHITACHI ELECTR ENG·Filed 2001·Granted Jul 23, 2002·4 cites·11 claims
- 3546US12305564B2Arrangement structure of cooling system in construction equipmentCATERPILLAR SARL·Filed 2017·Granted May 20, 2025·0 cites·9 claims
- 3643US6164532APower transmission system, power transmission/communication system and reader and/or writerHITACHI LTD·Filed 1998·Granted Dec 26, 2000·17 cites·15 claims
- 3743US2008051974A1Device and Method for Controlling Variable Input/Output Speed Ratio ClutchCATERPILLAR MITSUBISHI LTD·Filed 2005·Application pending·0 cites
- 3842US9880270B2Test device and imaging device including the sameSAMSUNG ELECTRONICS CO LTD·Filed 2015·Granted Jan 30, 2018·0 cites·13 claims
- 3940US8011223B2Remaining hydrogen sensorJAPAN STEEL WORKS LTD·Filed 2008·Granted Sep 6, 2011·0 cites·9 claims
- 4040US6606177B1Driver circuit and optical-transmission moduleHITACHI LTD·Filed 1999·Granted Aug 12, 2003·9 cites·31 claims
- 4138US5949823AData communication system and radio IC card systemHITACHI LTD·Filed 1997·Granted Sep 7, 1999·11 cites·14 claims
- 4238US2002011662A1Packaging substrate and semiconductor deviceFiled 2001·Application pending·0 cites
- 4337US10247360B2Method for filling hydrogen storage alloyJAPAN STEEL WORKS LTD·Filed 2015·Granted Apr 2, 2019·0 cites·1 claims
- 4432US4855970ATime interval measurement apparatusHITACHI LTD·Filed 1987·Granted Aug 8, 1989·2 cites·27 claims
- 4526US6449012B1Scanning type image pick-up apparatus and a scanning type laser beam receive apparatusTOSHIBA KK·Filed 1997·Granted Sep 10, 2002·0 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →