Inventor · disambiguated record
Hiroyoshi Ishikawa
Also filed as: ISHIKAWA HIROYOSHI
82 granted patents·10 pending applications·731 citations·filing 2000–2022
99Inventor score
Top patents by PatentIndex Score
92 records- 0195USD597151SChassis for radio control toy vehicleKYOSHO CORP·Filed 2008·Granted Jul 28, 2009·60 cites·1 claims
- 0293US6552609B2Signal distortion compensating apparatus and methodFUJITSU LTD·Filed 2001·Granted Apr 22, 2003·64 cites·21 claims
- 0392US7551687B2Distortion compensating apparatusFUJITSU LTD·Filed 2005·Granted Jun 23, 2009·21 cites·9 claims
- 0491US11563464B2Signal processing device and inter-beam interference suppression methodFUJITSU LTD·Filed 2021·Granted Jan 24, 2023·2 cites·14 claims
- 0590US7106249B2Phase calibration method and apparatusFUJITSU LTD·Filed 2004·Granted Sep 12, 2006·42 cites·23 claims
- 0690US7012969B2Distortion compensating apparatusFUJITSU LTD·Filed 2000·Granted Mar 14, 2006·44 cites·21 claims
- 0788US6907085B2Activation method of communications apparatus with a non-linear distortion compensation deviceFUJITSU LTD·Filed 2001·Granted Jun 14, 2005·36 cites·15 claims
- 0887US9270231B2Distortion compensation apparatus, wireless transmission apparatus, and distortion compensation methodFUJITSU LTD·Filed 2015·Granted Feb 23, 2016·6 cites·11 claims
- 0987US8532223B2Power amplifying device and power amplifying methodNAGATANI KAZUO·Filed 2010·Granted Sep 10, 2013·12 cites·8 claims
- 1087US7839949B2Peak suppression method, peak suppression apparatus and wireless transmission apparatusFUJITSU LTD·Filed 2006·Granted Nov 23, 2010·15 cites·16 claims
- 1187US6757525B1Distortion compensating apparatusFUJITSU LTD·Filed 2002·Granted Jun 29, 2004·44 cites·14 claims
- 1286US9819370B2Distortion compensation device and distortion compensation methodFUJITSU LTD·Filed 2015·Granted Nov 14, 2017·6 cites·10 claims
- 1385US6980604B2Transmission device and transmission methodFUJITSU LTD·Filed 2001·Granted Dec 27, 2005·47 cites·26 claims
- 1485US6717464B2Distortion compensating apparatusFUJITSU LTD·Filed 2002·Granted Apr 6, 2004·33 cites·26 claims
- 1584US7804914B2Radio transmission apparatus having peak suppression functionFUJITSU LTD·Filed 2008·Granted Sep 28, 2010·11 cites·7 claims
- 1682US7447485B2Device and method for controlling a voltage control signalFUJITSU LTD·Filed 2006·Granted Nov 4, 2008·12 cites·11 claims
- 1782US6864745B2Distortion compensation deviceFUJITSU LTD·Filed 2003·Granted Mar 8, 2005·33 cites·17 claims
- 1881US6657493B2Distortion compensation apparatus and distortion compensation methodFUJITSU LTD·Filed 2002·Granted Dec 2, 2003·27 cites·16 claims
- 1980US8933752B2Power amplifier apparatus, distortion compensation coefficient updating method, and transmission apparatusNAGATANI KAZUO·Filed 2011·Granted Jan 13, 2015·7 cites·12 claims
- 2080US8009756B2Peak suppressing and restoring method, transmitter, receiver, and peak suppressing and restoring systemFUJITSU LTD·Filed 2009·Granted Aug 30, 2011·7 cites·10 claims
- 2179US9768891B2Distortion compensation device and distortion compensation methodFUJITSU LTD·Filed 2016·Granted Sep 19, 2017·3 cites·5 claims
- 2279US8154341B2Power amplifying apparatusISHIKAWA HIROYOSHI·Filed 2008·Granted Apr 10, 2012·10 cites·8 claims
- 2379US7106133B2Distortion compensatorFUJITSU LTD·Filed 2004·Granted Sep 12, 2006·23 cites·16 claims
- 2478US8451055B2Distortion compensating apparatus, transmitting apparatus, and distortion compensating methodFUDABA NOBUKAZU·Filed 2011·Granted May 28, 2013·7 cites·9 claims
- 2577US7860185B2Distortion compensating apparatus and power amplifier apparatusFUJITSU LTD·Filed 2008·Granted Dec 28, 2010·9 cites·12 claims
- 2676US7551905B2Distortion compensation apparatusFUJITSU LTD·Filed 2004·Granted Jun 23, 2009·21 cites·10 claims
- 2775US8509349B2Transmitter and distortion compensating methodNAGATANI KAZUO·Filed 2012·Granted Aug 13, 2013·4 cites·6 claims
- 2874US10659124B2Multiantenna communication device and coefficient update methodFUJITSU LTD·Filed 2019·Granted May 19, 2020·2 cites·12 claims
- 2974US7969205B2Peak power reduction methodFUJITSU LTD·Filed 2009·Granted Jun 28, 2011·5 cites·19 claims
- 3074US7756216B2Signal peak voltage suppression apparatusFUJITSU LTD·Filed 2006·Granted Jul 13, 2010·5 cites·14 claims
- 3171US7991073B2Distortion compensation apparatus and methodFUJITSU LTD·Filed 2009·Granted Aug 2, 2011·4 cites·22 claims
- 3270US8619905B2Predistorter and distortion compensation methodISHIKAWA HIROYOSHI·Filed 2010·Granted Dec 31, 2013·4 cites·13 claims
- 3370US8588711B2Transmission apparatus and distortion compensation methodISHIKAWA HIROYOSHI·Filed 2011·Granted Nov 19, 2013·4 cites·12 claims
- 3470US7388926B2Quadrature modulation systemFUJITSU LTD·Filed 2004·Granted Jun 17, 2008·14 cites·22 claims
- 3568US9190964B2Distortion compensation device and distortion compensation methodFUJITSU LTD·Filed 2013·Granted Nov 17, 2015·3 cites·17 claims
- 3667US9225295B2Distortion compensation apparatus and distortion compensation methodFUJITSU LTD·Filed 2013·Granted Dec 29, 2015·3 cites·6 claims
- 3767US8787487B2Distortion compensation device and distortion compensating methodNAGATANI KAZUO·Filed 2012·Granted Jul 22, 2014·2 cites·14 claims
- 3867US8712345B2Distortion compensation device, distortion compensation method, and radio transmitterISHIKAWA HIROYOSHI·Filed 2012·Granted Apr 29, 2014·3 cites·12 claims
- 3967US8452250B2DC offset compensation method and DC offset compensation deviceISHIKAWA HIROYOSHI·Filed 2007·Granted May 28, 2013·3 cites·25 claims
- 4067US7782153B2Timing adjusting method and timing adjusting apparatusFUJITSU LTD·Filed 2006·Granted Aug 24, 2010·3 cites·16 claims
- 4166US8737937B2Distortion compensation apparatus, transmitter, and distortion compensation methodISHIKAWA HIROYOSHI·Filed 2012·Granted May 27, 2014·3 cites·12 claims
- 4266US8442157B2Wireless apparatus and signal processing methodISHIKAWA HIROYOSHI·Filed 2010·Granted May 14, 2013·2 cites·11 claims
- 4366US8102941B2Peak suppression control apparatusHAMADA HAJIME·Filed 2007·Granted Jan 24, 2012·3 cites·29 claims
- 4465US7848449B2Offset compensation deviceFUJITSU LTD·Filed 2004·Granted Dec 7, 2010·9 cites·14 claims
- 4564US8571495B2Distortion compensation apparatus and methodNAGATANI KAZUO·Filed 2010·Granted Oct 29, 2013·3 cites·10 claims
- 4664US8130866B2Peak suppressing apparatus, peak suppressing method, and wireless communication deviceNAGATANI KAZUO·Filed 2009·Granted Mar 6, 2012·2 cites·5 claims
- 4762US12334964B2Wireless communication apparatus and distortion compensation methodFUJITSU LTD·Filed 2022·Granted Jun 17, 2025·0 cites·10 claims
- 4862US8520770B2Amplitude suppressing apparatus and signal transmitting apparatusISHIKAWA HIROYOSHI·Filed 2009·Granted Aug 27, 2013·2 cites·1 claims
- 4962US7746957B2Distortion correction control apparatus and distortion correction control methodFUJITSU LTD·Filed 2009·Granted Jun 29, 2010·4 cites·10 claims
- 5061US7447484B2Timing controller and timing control methodFUJITSU LTD·Filed 2006·Granted Nov 4, 2008·4 cites·13 claims
Showing the top 50 of 92 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →