Inventor · disambiguated record
Koichi Hirokawa
Also filed as: HIROKAWA KOICHI
42 granted patents·3 pending applications·346 citations·filing 1981–2020
98Inventor score
Top patents by PatentIndex Score
45 records- 0186US9123098B2Medical image processing device and medical image processing method, applying weighted penalty term in iterative approximationTAKAHASHI HISASHI·Filed 2012·Granted Sep 1, 2015·10 cites·10 claims
- 0284US9592023B2X-ray CT apparatus and tomography methodHITACHI LTD·Filed 2013·Granted Mar 14, 2017·7 cites·18 claims
- 0383US8175217B2X-ray CT apparatusSUGAYA YOSHIAKI·Filed 2008·Granted May 8, 2012·14 cites·11 claims
- 0483US7715522B2X-ray CT apparatusHITACHI MEDICAL CORP·Filed 2006·Granted May 11, 2010·31 cites·20 claims
- 0580US7602880B2X-ray CT apparatusHITACHI MEDICAL CORP·Filed 2006·Granted Oct 13, 2009·25 cites·8 claims
- 0680US7505550B2Radiotomography apparatusHITACHI MEDICAL CORP·Filed 2005·Granted Mar 17, 2009·11 cites·31 claims
- 0779US8744039B2X-ray CT apparatusHIROKAWA KOICHI·Filed 2009·Granted Jun 3, 2014·22 cites·8 claims
- 0879US7945013B2X-ray CT apparatusHITACHI MEDICAL CORP·Filed 2008·Granted May 17, 2011·23 cites·6 claims
- 0977US7876874B2Radiographing apparatus and image processing programHITACHI MEDICAL CORP·Filed 2006·Granted Jan 25, 2011·19 cites·20 claims
- 1077US7813471B2X-ray CT apparatusHITACHI MEDICAL CORP·Filed 2007·Granted Oct 12, 2010·19 cites·20 claims
- 1177US7636416B2X-ray CT apparatus comprising a tube current control unitHITACHI MEDICAL CORP·Filed 2006·Granted Dec 22, 2009·18 cites·11 claims
- 1277US7366277B2Tomographic device and method thereforHITACHI MEDICAL CORP·Filed 2005·Granted Apr 29, 2008·9 cites·14 claims
- 1376US8971607B2X-ray CT apparatus and image reconstruction methodGOTO TAIGA·Filed 2011·Granted Mar 3, 2015·5 cites·8 claims
- 1476US7653224B2Image reconstruction method and tomographHITACHI MEDICAL CORP·Filed 2005·Granted Jan 26, 2010·8 cites·21 claims
- 1574US9050003B2Reconstruction computing device, reconstruction computing method, and X-ray CT apparatusTAKAHASHI HISASHI·Filed 2011·Granted Jun 9, 2015·4 cites·7 claims
- 1674US7734006B2X-ray CT apparatusHITACHI MEDICAL CORP·Filed 2006·Granted Jun 8, 2010·12 cites·13 claims
- 1773US10213177B2X-ray CT apparatus, data processing device, and projection data generation methodHITACHI LTD·Filed 2015·Granted Feb 26, 2019·2 cites·12 claims
- 1872US9406121B2X-ray CT apparatus and image reconstruction methodHITACHI MEDICAL CORP·Filed 2013·Granted Aug 2, 2016·3 cites·15 claims
- 1971US9254107B2X-ray CT apparatus and tube current determination methodSUGAYA YOSHIAKI·Filed 2011·Granted Feb 9, 2016·6 cites·14 claims
- 2071US9123156B2X-ray CT apparatus and image reconstruction methodTAKAHASHI HISASHI·Filed 2011·Granted Sep 1, 2015·3 cites·12 claims
- 2169US10238357B2X-ray CT apparatus and scanning methodHITACHI LTD·Filed 2015·Granted Mar 26, 2019·2 cites·17 claims
- 2269US7983383B2X-ray CT apparatusHITACHI MEDICAL CORP·Filed 2007·Granted Jul 19, 2011·7 cites·20 claims
- 2369US7949170B2Image processing method, image processing device, computer aided detection, and method for filtering along the time axisHITACHI MEDICAL CORP·Filed 2004·Granted May 24, 2011·14 cites·15 claims
- 2468US11127123B2Medical image processing device and medical image processing methodHITACHI LTD·Filed 2018·Granted Sep 21, 2021·1 cites·10 claims
- 2568US9895128B2X-ray CT apparatus and correction processing deviceHITACHI LTD·Filed 2014·Granted Feb 20, 2018·3 cites·16 claims
- 2668US8744040B2X-ray CT apparatus and methodSUGAYA YOSHIAKI·Filed 2010·Granted Jun 3, 2014·5 cites·15 claims
- 2767US10878602B2Image reconstruction device, X-ray CT device, and image reconstruction methodHITACHI LTD·Filed 2017·Granted Dec 29, 2020·1 cites·11 claims
- 2866US8270560B2X-ray CT scan simulator and X-ray CT apparatusHIROKAWA KOICHI·Filed 2009·Granted Sep 18, 2012·6 cites·7 claims
- 2966US8189736B2X-ray CT apparatusHIROKAWA KOICHI·Filed 2008·Granted May 29, 2012·6 cites·9 claims
- 3064US4995602AFacsimile deviceRICOH KK·Filed 1990·Granted Feb 26, 1991·18 cites·20 claims
- 3162US9980694B2X-ray CT apparatus and image calculating device for X-ray CT apparatusHITACHI LTD·Filed 2015·Granted May 29, 2018·1 cites·9 claims
- 3261US9159146B2Image reconstruction device and image reconstruction method configured to perform iteratively reconstructed image using weight coefficientTAKAHASHI HISASHI·Filed 2012·Granted Oct 13, 2015·1 cites·9 claims
- 3360US9454804B2Image processing device and image processing methodHITACHI MEDICAL CORP·Filed 2013·Granted Sep 27, 2016·1 cites·14 claims
- 3460US8983025B2X-ray CT apparatusHIROKAWA KOICHI·Filed 2008·Granted Mar 17, 2015·2 cites·5 claims
- 3557US8737711B2X-ray CT image forming method and X-ray CT apparatus using the sameGOTO TAIGA·Filed 2009·Granted May 27, 2014·2 cites·9 claims
- 3651US11790576B2Medical image processing apparatus and medical image processing methodHITACHI LTD·Filed 2020·Granted Oct 17, 2023·0 cites·10 claims
- 3750US7684539B2X-ray tomographHITACHI MEDICAL CORP·Filed 2003·Granted Mar 23, 2010·3 cites·7 claims
- 3849US4378416APhotosensitive member for use in electrophotographic copying processRICOH KK·Filed 1981·Granted Mar 29, 1983·7 cites·11 claims
- 3945US10410343B2Image computing device, image computing method, and tomographHITACHI LTD·Filed 2016·Granted Sep 10, 2019·0 cites·11 claims
- 4045US5949843AX-ray tomography apparatusHITACHI MEDICAL CORP·Filed 1997·Granted Sep 7, 1999·15 cites·6 claims
- 4144US11113810B2X-ray CT scanner, image generation method, and image generation programHITACHI LTD·Filed 2018·Granted Sep 7, 2021·0 cites·12 claims
- 4243US10398404B2Data processing device, X-ray CT apparatus, and reference correction methodHITACHI LTD·Filed 2015·Granted Sep 3, 2019·0 cites·8 claims
- 4342US2009257553A1X-ray ct apparatus and image noise reduction methodHITACHI MEDICAL CORP·Filed 2007·Application pending·0 cites
- 4438US2009304141A1X-Ray CT ApparatusHITACHI MEDICAL CORP·Filed 2007·Application pending·0 cites
- 4535US2017202532A1Data processing method, data processing device, and x-ray ct apparatusHITACHI LTD·Filed 2015·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →