Inventor · disambiguated record
Kyoichi Hosokawa
Also filed as: HOSOKAWA KYOICHI
60 granted patents·5 pending applications·844 citations·filing 1991–2013
99Inventor score
Files withHITACHI LTD40RENESAS TECH CORP6HITACHI CONSUMER ELECTRONICS5OKAMOTO HIROO5HOSOKAWA KYOICHI4
Top patents by PatentIndex Score
65 records- 0196US7245116B2Power supply device and switching power supply deviceRENESAS TECH CORP·Filed 2005·Granted Jul 17, 2007·37 cites·13 claims
- 0295US7514908B2Switching power supply device and a semiconductor integrated circuitRENESAS TECH CORP·Filed 2005·Granted Apr 7, 2009·40 cites·34 claims
- 0393US6041161AInput-output circuit, recording apparatus and reproduction apparatus for digital video signalHITACHI LTD·Filed 1997·Granted Mar 21, 2000·50 cites·10 claims
- 0492US8063620B2Switching power supply device and semiconductor integrated circuitHOSOKAWA KYOICHI·Filed 2011·Granted Nov 22, 2011·9 cites·10 claims
- 0592US6163644AMethod and apparatus for receiving and/or reproducing digital signalHITACHI LTD·Filed 1996·Granted Dec 19, 2000·103 cites·16 claims
- 0688US7166992B2Electronic component for power supply and a power supply deviceRENESAS TECH CORP·Filed 2006·Granted Jan 23, 2007·27 cites·10 claims
- 0788US5878010AMethod and apparatus for recording digital signalHITACHI LTD·Filed 1995·Granted Mar 2, 1999·41 cites·27 claims
- 0887US7158392B2Switching power supply device and the semiconductor integrated circuit for power supply controlRENESAS TECH CORP·Filed 2003·Granted Jan 2, 2007·55 cites·23 claims
- 0987US6249532B1Interactive chargeable communication system with billing system thereforHITACHI LTD·Filed 1999·Granted Jun 19, 2001·101 cites·39 claims
- 1086US5337199ADigital transmission signal processing system and recording/reproducing systemHITACHI LTD·Filed 1991·Granted Aug 9, 1994·35 cites·3 claims
- 1185US7342391B2Power supply device and switching power supply deviceRENESAS TECH CORP·Filed 2007·Granted Mar 11, 2008·10 cites·13 claims
- 1285US6321025B1Method and apparatus for receiving and/or reproducing digital signalHITACHI LTD·Filed 2000·Granted Nov 20, 2001·19 cites·20 claims
- 1384US6002694AInteractive chargeable communication system with billing system thereforHITACHI LTD·Filed 1995·Granted Dec 14, 1999·77 cites·12 claims
- 1483US6600870B1Input-output circuit, recording apparatus and reproduction apparatus for digital video signalHITACHI LTD·Filed 1999·Granted Jul 29, 2003·23 cites·13 claims
- 1579US6201654B1Method and apparatus for recording digital signalHITACHI LTD·Filed 1999·Granted Mar 13, 2001·24 cites·9 claims
- 1677US5903704AApparatus for selectively recording and reproducing received analog and digital signalsHITACHI LTD·Filed 1995·Granted May 11, 1999·26 cites·13 claims
- 1776US9369045B2Switching power supply device and a semiconductor integrated circuitRENESAS ELECTRONICS CORP·Filed 2013·Granted Jun 14, 2016·2 cites·6 claims
- 1875US8254758B2Input-output circuit, recording apparatus and reproduction apparatus for digital video signalOKAMOTO HIROO·Filed 2008·Granted Aug 28, 2012·1 cites·4 claims
- 1974US8699864B2Method and apparatus for receiving a digital signal and apparatus for recording and reproducing the digital signalOWASHI HITOAKI·Filed 2009·Granted Apr 15, 2014·3 cites·2 claims
- 2074US7259926B2Digital information recording/reproducing apparatusHITACHI LTD·Filed 2005·Granted Aug 21, 2007·1 cites·3 claims
- 2173US8305060B2Switching power supply device and a semiconductor integrated circuitHOSOKAWA KYOICHI·Filed 2011·Granted Nov 6, 2012·2 cites·10 claims
- 2272US7319808B2Input-output circuit, recording apparatus and reproduction apparatus for digital video signalHITACHI LTD·Filed 2003·Granted Jan 15, 2008·6 cites·26 claims
- 2368US6847781B1Digital signal recording apparatus and recording mediumHITACHI LTD·Filed 2000·Granted Jan 25, 2005·10 cites·3 claims
- 2468US6757478B2Method and apparatus for receiving a digital signal and apparatus for recording and reproducing the digital signalHITACHI LTD·Filed 2001·Granted Jun 29, 2004·5 cites·11 claims
- 2567US7952823B2Method for transmitting digital audio and video informationHITACHI CONSUMER ELECTRONICS·Filed 2007·Granted May 31, 2011·0 cites·10 claims
- 2666US7859777B2Method and apparatus for transmitting and receiving digital video and audio informationHITACHI CONSUMER ELECTRONICS·Filed 2007·Granted Dec 28, 2010·0 cites·11 claims
- 2766US7808733B2Method and apparatus for transmitting and receiving digital video and audio informationHITACHI CONSUMER ELECTRONICS·Filed 2007·Granted Oct 5, 2010·0 cites·19 claims
- 2866US7550959B2Power supply device and switching power supply deviceRENESAS TECH CORP·Filed 2008·Granted Jun 23, 2009·2 cites·4 claims
- 2965US8340501B2Input-output circuit, recording apparatus and reproduction apparatus for digital video signalOKAMOTO HIROO·Filed 2008·Granted Dec 25, 2012·0 cites·2 claims
- 3065US8270812B2Input-output circuit, recording apparatus and reproduction apparatus for digital video signalOKAMOTO HIROO·Filed 2008·Granted Sep 18, 2012·0 cites·2 claims
- 3165US6363210B1Communication system for encrypted data and apparatus for selectively recording and reproducing received analog signal and received digital signalHITACHI LTD·Filed 1999·Granted Mar 26, 2002·25 cites·11 claims
- 3264US7286310B2Apparatus for receiving compressed digital informationHITACHI LTD·Filed 2006·Granted Oct 23, 2007·0 cites·7 claims
- 3364US6324025B1Digital transmission signal processing system and recording/reproducing systemHITACHI LTD·Filed 2000·Granted Nov 27, 2001·2 cites·9 claims
- 3464US5875279ASubscriber terminal of an interactive communication system and control device thereofHITACHI LTD·Filed 1997·Granted Feb 23, 1999·29 cites·1 claims
- 3563US8306395B2Input-output circuit, recording apparatus and reproduction apparatus for digital video signalOKAMOTO HIROO·Filed 2007·Granted Nov 6, 2012·0 cites·2 claims
- 3662US8009375B2Apparatus and method for receiving and recording digital informationHITACHI CONSUMER ELECTRONICS·Filed 2005·Granted Aug 30, 2011·0 cites·32 claims
- 3759US6278564B1Digital transmission signal processing system and recording/reproducing systemHITACHI LTD·Filed 2000·Granted Aug 21, 2001·1 cites·5 claims
- 3856US5459585AApparatus and method of storing image signalsHITACHI LTD·Filed 1993·Granted Oct 17, 1995·11 cites·10 claims
- 3955US2009267587A1Power supply device and switching power supply deviceRENEAS TECHNOLOGY CORP·Filed 2009·Application pending·0 cites
- 4053US2007122122A1Digital video signal recording/reproducing method and apparatusOKAMOTO HIROO·Filed 2006·Application pending·0 cites
- 4152US7902799B2Switching power supply device and semiconductor integrated circuitRENESAS ELECTRONICS CORP·Filed 2009·Granted Mar 8, 2011·1 cites·7 claims
- 4251US8604764B2Switching power supply device and a semiconductor integrated circuitHOSOKAWA KYOICHI·Filed 2012·Granted Dec 10, 2013·0 cites·2 claims
- 4351US7844986B2Method and apparatus for receiving a digital signal and apparatus for recording and reproducing the digital signalHITACHI CONSUMER ELECTRONICS·Filed 2004·Granted Nov 30, 2010·0 cites·11 claims
- 4451US7027240B2Digital information recording/reproducing method and apparatusHITACHI LTD·Filed 2003·Granted Apr 11, 2006·0 cites·15 claims
- 4550US8471541B2Switching power supply device and a semiconductor integrated circuitHOSOKAWA KYOICHI·Filed 2012·Granted Jun 25, 2013·0 cites·6 claims
- 4650US6952315B2Digital information recording/reproducing apparatusHITACHI LTD·Filed 2003·Granted Oct 4, 2005·0 cites·2 claims
- 4750US6590726B2Apparatus and method for transmitting and receiving digital informationHITACHI LTD·Filed 2002·Granted Jul 8, 2003·0 cites·10 claims
- 4850US6046872AMethod and apparatus for recording digital signalHITACHI LTD·Filed 1998·Granted Apr 4, 2000·6 cites·25 claims
- 4950US5671095ADigital transmission signal processing system and recording/reproducing systemHITACHI LTD·Filed 1994·Granted Sep 23, 1997·6 cites·26 claims
- 5048US7012769B2Digital information recording/reproducing apparatusHITACHI LTD·Filed 2003·Granted Mar 14, 2006·0 cites·9 claims
Showing the top 50 of 65 patent records by PatentIndex Score.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →