Inventor · disambiguated record
Katsuei Ichikawa
Also filed as: ICHIKAWA KATSUEI
18 granted patents·5 pending applications·126 citations·filing 2003–2023
93Inventor score
Files withMAXELL LTD6RENESAS ELECTRONICS CORP6HITACHI LTD4HITACHI AUTOMOTIVE SYSTEMS LTD2ICHIKAWA KATSUEI2
Top patents by PatentIndex Score
23 records- 0194US10404107B2Non-contact charging device, and non-contact power supply system using sameRENESAS ELECTRONICS CORP·Filed 2018·Granted Sep 3, 2019·12 cites·6 claims
- 0293US10050474B2Non-contact power transmission system, receiving apparatus and transmitting apparatusHITACHI MAXELL·Filed 2015·Granted Aug 14, 2018·12 cites·16 claims
- 0390US9154003B2Non-contact power transmission system, receiving apparatus and transmitting apparatusICHIKAWA KATSUEI·Filed 2012·Granted Oct 6, 2015·20 cites·15 claims
- 0489US9991731B2Non-contact charging device with wireless communication antenna coil for data transfer and electric power transmitting antenna coil for transfer of electric power, and non-contact power supply system using sameRENESAS ELECTRONICS CORP·Filed 2013·Granted Jun 5, 2018·14 cites·8 claims
- 0588US10075025B2Power transmission device, wireless power feeding system, and control methodRENESAS ELECTRONICS CORP·Filed 2013·Granted Sep 11, 2018·12 cites·20 claims
- 0686US9960641B2Non-contact power feeding device used in torque sensor having a coil enclosed in peripheral side of a resonance coil and is magnetically coupled with the resonance coilHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2015·Granted May 1, 2018·6 cites·5 claims
- 0786US8531059B2Wireless power transfer system and a load apparatus in the same wireless power transfer systemICHIKAWA KATSUEI·Filed 2009·Granted Sep 10, 2013·35 cites·11 claims
- 0882US11404912B2Power reception unit, power transmission unit, and wireless power transfer deviceHITACHI LTD·Filed 2020·Granted Aug 2, 2022·2 cites·3 claims
- 0981US10177817B2Electric power transmitting device, non-contact power supply system, and control methodRENESAS ELECTRONICS CORP·Filed 2014·Granted Jan 8, 2019·6 cites·15 claims
- 1080US9958345B2Rotating body non-contact power-feeding device and torque sensorHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2015·Granted May 1, 2018·5 cites·12 claims
- 1172US12040633B2Wireless power transfer using inductive couplingMAXELL LTD·Filed 2023·Granted Jul 16, 2024·0 cites·20 claims
- 1264US10971952B2Wireless power transfer deviceMAXELL LTD·Filed 2017·Granted Apr 6, 2021·1 cites·11 claims
- 1362US11018528B2Wireless power transmission/reception system, power conversion device including the same, and power conversion methodHITACHI LTD·Filed 2016·Granted May 25, 2021·1 cites·11 claims
- 1459US12451733B2Wireless power receiving device, wireless power transmitting device, wireless earphone, LED device, and wireless power transmitting and receiving systemMAXELL LTD·Filed 2019·Granted Oct 21, 2025·0 cites·10 claims
- 1558US11303325B2Electric power transmitting device, non-contact power supply system, and control methodRENESAS ELECTRONICS CORP·Filed 2018·Granted Apr 12, 2022·0 cites·3 claims
- 1654US11581758B2Power transfer coilMAXELL LTD·Filed 2017·Granted Feb 14, 2023·0 cites·4 claims
- 1754US2018351370A1Power transmission device, wireless power feeding system, and control methodRENESAS ELECTRONICS CORP·Filed 2018·Application pending·0 cites
- 1850US11095167B2Power transmission deviceMAXELL LTD·Filed 2017·Granted Aug 17, 2021·0 cites·7 claims
- 1945US10971953B2Contactless power receiving device, contactless power transfer device, and contactless power transfer and receiving deviceMAXELL LTD·Filed 2016·Granted Apr 6, 2021·0 cites·13 claims
- 2045US2004046871A1Photographing apparatus, photographing restrain system, and photographing restrain release systemFiled 2003·Application pending·0 cites
- 2144US2004100562A1Transmitting device, video camera device, transmitting method for the transmitting device, and transmitting method for the video camera deviceHITACHI LTD·Filed 2003·Application pending·0 cites
- 2242US2004048589A1Radio communication apparatusHITACHI LTD·Filed 2003·Application pending·0 cites
- 2341US2014028093A1Power transmitting device, power receiving device, power transmitting method of power transmitting device, and power receiving method of power receiving deviceAIKAWA MAKOTO·Filed 2012·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →