Inventor · disambiguated record
Tadashi Ogawa
Also filed as: OGAWA TADASHI · YOKOGAWA TOMOHISA
156 granted patents·10 pending applications·1,686 citations·filing 1977–2024
99Inventor score
Top patents by PatentIndex Score
166 records- 0199US7801457B2Fixing device, image forming apparatus including the fixing device, and fixing methodRICOH KK·Filed 2008·Granted Sep 21, 2010·65 cites·17 claims
- 0299US7783240B2Fixing device, image forming apparatus including the fixing device, and fixing methodRICOH KK·Filed 2008·Granted Aug 24, 2010·65 cites·18 claims
- 0398US7796933B2Fixing device using electromagnetic induction heating and image forming apparatus including sameRICOH KK·Filed 2008·Granted Sep 14, 2010·56 cites·16 claims
- 0498US7546049B2Image forming device with a control means to correct the fixing control temperatureRICOH LTD·Filed 2006·Granted Jun 9, 2009·79 cites·19 claims
- 0597US8014711B2Fixing unit having enhanced temperature control and image forming apparatus using the sameRICOH CO LTD·Filed 2007·Granted Sep 6, 2011·34 cites·33 claims
- 0697US7885590B2Image forming apparatus and fixing deviceRICOH CO LTD·Filed 2007·Granted Feb 8, 2011·29 cites·20 claims
- 0797US7817952B2Fixer and image forming apparatus including the sameRICOH KK·Filed 2007·Granted Oct 19, 2010·28 cites·21 claims
- 0897US7778581B2Fixing unit having enhanced heating efficiency and image forming apparatus using the sameRICOH KK·Filed 2007·Granted Aug 17, 2010·29 cites·19 claims
- 0997US7693439B2Fixing device, and method and device for heating control used in the sameRICOH KK·Filed 2007·Granted Apr 6, 2010·29 cites·20 claims
- 1097US7509085B2Image forming apparatus, fixing apparatus and tonerRICOH KK·Filed 2006·Granted Mar 24, 2009·95 cites·16 claims
- 1197US4857449ASilver halide color photographic photosensitive materialsFUJI PHOTO FILM CO LTD·Filed 1988·Granted Aug 15, 1989·43 cites·25 claims
- 1296US7734208B2Image fixing apparatus and image forming apparatus capable of effectively controlling an image fixing temperatureRICOH KK·Filed 2006·Granted Jun 8, 2010·28 cites·15 claims
- 1396US5057405ASilver-halide color photographic light-sensitive materialFUJI PHOTO FILM CO LTD·Filed 1990·Granted Oct 15, 1991·38 cites·15 claims
- 1495US4366237ASilver halide color photographic light-sensitive materialFUJI PHOTO FILM CO LTD·Filed 1981·Granted Dec 28, 1982·41 cites·16 claims
- 1594US8886101B2Fixing device capable of enhancing durability of endless belt and image forming apparatus incorporating the sameKAWATA TEPPEI·Filed 2012·Granted Nov 11, 2014·7 cites·17 claims
- 1693US9360816B1Toner bottle driving device control method and image forming apparatusMABUCHI HIROYUKI·Filed 2015·Granted Jun 7, 2016·22 cites·11 claims
- 1793US9031439B2Fixing device and image forming deviceHASE TAKAMASA·Filed 2013·Granted May 12, 2015·7 cites·7 claims
- 1893US8112023B2Image forming apparatus and fixing deviceSEO HIROSHI·Filed 2010·Granted Feb 7, 2012·9 cites·16 claims
- 1993US5496689ASilver halide color photographic materialsFUJI PHOTO FILM CO LTD·Filed 1995·Granted Mar 5, 1996·24 cites·7 claims
- 2093US4837140AColor image-forming high silver chloride color photographic material having improved spectral sensitivity and silver removability for use therewithFUJI PHOTO FILM CO LTD·Filed 1987·Granted Jun 6, 1989·26 cites·8 claims
- 2193US4295823AApparatus for continuously producing a cement clinkerSUMITOMO CEMENT CO·Filed 1980·Granted Oct 20, 1981·77 cites·9 claims
- 2292US9811031B2Fixing device capable of enhancing durability of endless belt and image forming apparatus incorporating the sameKAWATA TEPPEI·Filed 2015·Granted Nov 7, 2017·4 cites·35 claims
- 2392US9405250B2Fixing device capable of minimizing damage of endless rotary body and image forming apparatus incorporating sameOGAWA TADASHI·Filed 2015·Granted Aug 2, 2016·5 cites·8 claims
- 2492US9046838B2Fixing device and image forming apparatusARAI YUJI·Filed 2013·Granted Jun 2, 2015·6 cites·23 claims
- 2591US9026024B2Fixing device capable of minimizing damage of endless rotary body and image forming apparatus incorporating sameRICOH CO LTD·Filed 2013·Granted May 5, 2015·5 cites·13 claims
- 2691US8929791B2Fixing device and endless belt assemblyISHII KENJI·Filed 2013·Granted Jan 6, 2015·6 cites·20 claims
- 2790US8718502B2Fixing device and image forming apparatus incorporating same having a tube which penetrates through a heater and passes infrared rays to a temperature detectorYUASA SHUUTAROH·Filed 2012·Granted May 6, 2014·6 cites·15 claims
- 2890US4205270AStation selection indicating devicePIONEER ELECTRONIC CORP·Filed 1978·Granted May 27, 1980·21 cites·3 claims
- 2989US9507313B2Image forming apparatus with removable unit and a connectable device to connect to the removable unitTERAI JUNICHI·Filed 2015·Granted Nov 29, 2016·4 cites·16 claims
- 3089US9037008B2Fixing device and image forming apparatus including sameHASE TAKAMASA·Filed 2013·Granted May 19, 2015·4 cites·15 claims
- 3188US8626018B2Fixing unit and image forming apparatusOGAWA TADASHI·Filed 2011·Granted Jan 7, 2014·5 cites·7 claims
- 3288US8543046B2Fixing device, image forming apparatus incorporating same, and fixing methodSEO HIROSHI·Filed 2011·Granted Sep 24, 2013·5 cites·15 claims
- 3387US9069304B2Image forming apparatusSESHITA TAKUYA·Filed 2013·Granted Jun 30, 2015·4 cites·18 claims
- 3487US5698740AHole-transport materialTOYO INK MFG CO·Filed 1997·Granted Dec 16, 1997·50 cites·4 claims
- 3586US5153111AComposition for color-development and method for processing using sameFUJI PHOTO FILM CO LTD·Filed 1991·Granted Oct 6, 1992·15 cites·19 claims
- 3686US4791053ASilver halide photographic materialFUJI PHOTO FILM CO LTD·Filed 1986·Granted Dec 13, 1988·19 cites·9 claims
- 3785US9207596B2Image forming apparatus including a fixing deviceRICOH CO LTD·Filed 2014·Granted Dec 8, 2015·2 cites·18 claims
- 3885US8953994B2Fixing device and image forming apparatus incorporating sameIWAYA NAOKI·Filed 2012·Granted Feb 10, 2015·3 cites·8 claims
- 3985US4435503ASilver halide color photographic light-sensitive materialFUJI PHOTO FILM CO LTD·Filed 1982·Granted Mar 6, 1984·21 cites·21 claims
- 4085US4411987ASilver halide color photographic light-sensitive materialFUJI PHOTO FILM CO LTD·Filed 1982·Granted Oct 25, 1983·19 cites·38 claims
- 4184US10935911B2Fixing device capable of enhancing durability of endless belt and image forming apparatus incorporating the sameRICOH CO LTD·Filed 2017·Granted Mar 2, 2021·1 cites·57 claims
- 4284US9152106B2Fixing device and image forming apparatus including sameYAMAGUCHI YOSHIKI·Filed 2013·Granted Oct 6, 2015·3 cites·16 claims
- 4384US8855506B2Image forming apparatusHASE TAKAMASA·Filed 2013·Granted Oct 7, 2014·2 cites·8 claims
- 4484US4857444AColor photographic light-sensitive materialFUJI PHOTO FILM CO LTD·Filed 1986·Granted Aug 15, 1989·17 cites·32 claims
- 4584US4806460AMultilayer silver halide color photographic materialsFUJI PHOTO FILM CO LTD·Filed 1987·Granted Feb 21, 1989·17 cites·29 claims
- 4684US4627877AMethod and apparatus for continuously producing a cement clinkerOGAWA TADASHI·Filed 1980·Granted Dec 9, 1986·40 cites·11 claims
- 4783US9008558B2Separator and separation device, fixing device, and image forming apparatus incorporating sameSAITO KAZUYA·Filed 2012·Granted Apr 14, 2015·3 cites·20 claims
- 4883US4236901AAir cleaner with secondary air filter elementNIPPON DENSO CO·Filed 1978·Granted Dec 2, 1980·52 cites·3 claims
- 4982US8447199B2Fixing device and image forming apparatus including sameUENO SATOSHI·Filed 2010·Granted May 21, 2013·3 cites·10 claims
- 5080US8755733B2Fixing device, fixing method, image forming apparatus, and image forming methodEHARA MASANAO·Filed 2011·Granted Jun 17, 2014·3 cites·10 claims
Showing the top 50 of 166 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →