Inventor · disambiguated record
Tadashi Takahashi
Also filed as: MORINAGA SHIGEKI · TAKAHASHI TADASHI
177 granted patents·17 pending applications·5,576 citations·filing 1974–2024
99Inventor score
Top patents by PatentIndex Score
194 records- 0196US5239490ADevice for detecting rotation of rotary shaft and rotation controlling apparatus using the sameHITACHI LTD·Filed 1990·Granted Aug 24, 1993·126 cites·18 claims
- 0296US4874053ATorque detecting apparatusHITACHI LTD·Filed 1988·Granted Oct 17, 1989·118 cites·35 claims
- 0396US4599561ADevice for detecting the relative and absolute position of a moving bodyHITACHI LTD·Filed 1982·Granted Jul 8, 1986·73 cites·12 claims
- 0495US6977670B2Method and apparatus for selective registration of endoscopes with databasePENTAX CORP·Filed 2002·Granted Dec 20, 2005·93 cites·16 claims
- 0595US6442589B1Method and system for sorting and forwarding electronic messages and other dataFUJITSU LTD·Filed 1999·Granted Aug 27, 2002·493 cites·22 claims
- 0695US4558265AMethod and apparatus for position control of an electric motorHITACHI LTD·Filed 1983·Granted Dec 10, 1985·93 cites·6 claims
- 0793US7403299B2Querying of copyright host, printing of copyright information and host registration of copyright dataCANON KK·Filed 2005·Granted Jul 22, 2008·16 cites·6 claims
- 0893US6531552B2Olefin polymerization catalyst and method for polymerizing olefin using the sameJAPAN POLYCHEM CORP·Filed 2001·Granted Mar 11, 2003·46 cites·13 claims
- 0992US4818939AApparatus for magnetically detecting position or speed or moving body utilizing bridge circuit with series connected MR elementsHITACHI LTD·Filed 1987·Granted Apr 4, 1989·62 cites·13 claims
- 1092US4336475ASlotless brushless motorHITACHI LTD·Filed 1979·Granted Jun 22, 1982·52 cites·12 claims
- 1191US6578199B1Automatic tracking system and method for distributable softwareFUJITSU LTD·Filed 1999·Granted Jun 10, 2003·244 cites·34 claims
- 1291US5768117APower supply system for supplying electric power to a load through plural convertersHITACHI LTD·Filed 1994·Granted Jun 16, 1998·167 cites·19 claims
- 1391US5561366ACurrent sensor system and detection method comprising magetoresistance element, biasing conductor and current measurement conductor on insulating substrateHITACHI LTD·Filed 1992·Granted Oct 1, 1996·85 cites·8 claims
- 1491US5019776AMagnetic position detection apparatus having two magnetic recording medium tracks with magnetoresistors arranged in a bridge circuit so as to eliminate even order harmonic distortionHITACHI LTD·Filed 1989·Granted May 28, 1991·54 cites·8 claims
- 1591US4473786AMethod for controlling angular position and apparatus thereforHITACHI LTD·Filed 1982·Granted Sep 25, 1984·59 cites·11 claims
- 1690US11577630B2Seat slider deviceTOYOTA BODY SEIKO CO LTD·Filed 2020·Granted Feb 14, 2023·4 cites·3 claims
- 1790US7733859B2Apparatus and method for packet forwarding in layer 2 networkHITACHI LTD·Filed 2007·Granted Jun 8, 2010·25 cites·13 claims
- 1890US7559889B2Endoscope systemHOYA CORP·Filed 2006·Granted Jul 14, 2009·64 cites·16 claims
- 1990US6545703B1Electronic endoscopePENTAX CORP·Filed 1999·Granted Apr 8, 2003·127 cites·12 claims
- 2089US5432644ADisk drive unit having motor components in a compact arrangementHITACHI LTD·Filed 1994·Granted Jul 11, 1995·48 cites·11 claims
- 2188US4951134AColor tone controller for endoscopeASAHI OPTICAL CO LTD·Filed 1988·Granted Aug 21, 1990·65 cites·18 claims
- 2287US6972856B1Querying of copyright host, printing of copyright information and host registration of copyright dataCANON KK·Filed 2000·Granted Dec 6, 2005·29 cites·9 claims
- 2387US6381152B1Method of driving semiconductor switching device in non-saturated state and power supply apparatus containing such a switching deviceHITACHI LTD·Filed 2000·Granted Apr 30, 2002·32 cites·17 claims
- 2487US5026797AProcess for producing ethylene copolymersMITSUBISHI PETROCHEMICAL CO·Filed 1988·Granted Jun 25, 1991·63 cites·20 claims
- 2587US4418372AMagnetic rotary encoderHITACHI LTD·Filed 1980·Granted Nov 29, 1983·36 cites·21 claims
- 2687US3988654AMiniature brushless motorHITACHI LTD·Filed 1974·Granted Oct 26, 1976·39 cites·5 claims
- 2786US3942083ABrushless motorHITACHI LTD·Filed 1974·Granted Mar 2, 1976·33 cites·14 claims
- 2885US5502430AFlat transformer and power supply unit having flat transformerHITACHI LTD·Filed 1993·Granted Mar 26, 1996·41 cites·35 claims
- 2985US4875539AElectric power steering control systemHITACHI LTD·Filed 1988·Granted Oct 24, 1989·45 cites·20 claims
- 3084US10683230B2Gas branching apparatus and method for manufacturing fine glass particle deposited body using the sameFURUKAWA ELECTRIC CO LTD·Filed 2017·Granted Jun 16, 2020·1 cites·6 claims
- 3184US6473116B1Electronic endoscopeASAHI OPTICAL CO LTD·Filed 1999·Granted Oct 29, 2002·84 cites·16 claims
- 3284US5830121AEndoscopic apparatus having an endoscope and a peripheral device wherein total usage of the endoscope is quantified and recordedASAHI OPTICAL CO LTD·Filed 1996·Granted Nov 3, 1998·303 cites·5 claims
- 3384US4594548AMulti phase magnetic sensor apparatus for detecting the position of moving memberHITACHI LTD·Filed 1983·Granted Jun 10, 1986·32 cites·7 claims
- 3483US6097202ACircuit board inspection apparatus and methodNIDEC READ CORP·Filed 1998·Granted Aug 1, 2000·53 cites·22 claims
- 3583US4639807AMagnetic detector having magnetoresistive elementsHITACHI LTD·Filed 1983·Granted Jan 27, 1987·27 cites·10 claims
- 3682US11511357B2Horizontal latheFURUKAWA ELECTRIC CO LTD·Filed 2019·Granted Nov 29, 2022·2 cites·2 claims
- 3782US10525668B2Pressure-sensitive adhesive sheetNITTO DENKO CORP·Filed 2017·Granted Jan 7, 2020·1 cites·26 claims
- 3882US5453972AOptical disk apparatusHITACHI LTD·Filed 1993·Granted Sep 26, 1995·34 cites·4 claims
- 3982US5218279AMethod and apparatus for detection of physical quantities, servomotor system utilizing the method and apparatus and power steering apparatus using the servomotor systemHITACHI LTD·Filed 1991·Granted Jun 8, 1993·40 cites·17 claims
- 4082US4977078APlate substrate immunoassay device and method for performing a multi-test immunoassay on a specimenOLYMPUS OPTICAL CO·Filed 1987·Granted Dec 11, 1990·57 cites·11 claims
- 4182US4628259AMagneto resistive sensor for detecting movement of a rotating bodyHITACHI LTD·Filed 1981·Granted Dec 9, 1986·27 cites·16 claims
- 4282US4233919ASewing machine protection apparatusHITACHI LTD·Filed 1978·Granted Nov 18, 1980·12 cites·7 claims
- 4381US6937267B1Electronic endoscopePENTAX CORP·Filed 1999·Granted Aug 30, 2005·67 cites·27 claims
- 4481US4865148AVehicle height control apparatus responsive to power steering operationHITACHI LTD·Filed 1988·Granted Sep 12, 1989·45 cites·6 claims
- 4580US5474962APowder catalyst composition and process for polymerizing olefins with the use thereofMITSUBISHI PETROCHEMICAL CO·Filed 1993·Granted Dec 12, 1995·31 cites·11 claims
- 4680US4104978AProtective device in a motor-operated sewing machineHITACHI LTD·Filed 1977·Granted Aug 8, 1978·12 cites·10 claims
- 4779US8913348B2Suspension board with circuitNITTO DENKO CORP·Filed 2013·Granted Dec 16, 2014·4 cites·10 claims
- 4879US7792972B2Packet forwarding control method and packet forwarding apparatusHITACHI LTD·Filed 2007·Granted Sep 7, 2010·9 cites·10 claims
- 4979US6690409B1Electronic endoscope systemPENTAX CORP·Filed 1999·Granted Feb 10, 2004·61 cites·12 claims
- 5079US6524236B2Device for controlling an amount of light of a lighting unit for an endoscopePENTAX CORP·Filed 2001·Granted Feb 25, 2003·11 cites·11 claims
Showing the top 50 of 194 patent records by PatentIndex Score.
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