Inventor · disambiguated record
Hiromasa Katayama
Also filed as: KATAYAMA HIROMASA
43 granted patents·5 pending applications·288 citations·filing 1993–2025
97Inventor score
Top patents by PatentIndex Score
48 records- 0196US8139995B1Image forming apparatusFUJITA TAKASHI·Filed 2011·Granted Mar 20, 2012·20 cites·8 claims
- 0296US7313342B2Image forming apparatus including catalyst and active carbon filtersCANON KK·Filed 2005·Granted Dec 25, 2007·24 cites·6 claims
- 0395US9442458B2Image forming apparatusCANON KK·Filed 2016·Granted Sep 13, 2016·10 cites·10 claims
- 0494US7546078B2Image heating apparatus and image forming apparatus with displacing members for displacing other members of the apparatusesCANON KK·Filed 2006·Granted Jun 9, 2009·19 cites·8 claims
- 0593US8870178B2Image forming apparatusCANON KK·Filed 2013·Granted Oct 28, 2014·11 cites·7 claims
- 0693US8113499B2Sheet processing apparatus and image forming apparatus provided with the sameKUSHIDA HIDEKI·Filed 2010·Granted Feb 14, 2012·8 cites·18 claims
- 0793US7578497B2Sheet processing apparatus and image forming apparatus equipped with the sameCANON KK·Filed 2008·Granted Aug 25, 2009·13 cites·19 claims
- 0893US7505725B2Image heating apparatus including a retractable pressure belt with deviation controlCANON KK·Filed 2006·Granted Mar 17, 2009·16 cites·3 claims
- 0992US10274893B2Structure of image forming apparatusCANON KK·Filed 2017·Granted Apr 30, 2019·5 cites·32 claims
- 1090US2025306526A1Developer supply container and developer supplying systemCANON KK·Filed 2025·Application pending·0 cites
- 1189US9760059B2Photosensitive member unit and image forming apparatus including the sameCANON KK·Filed 2016·Granted Sep 12, 2017·10 cites·34 claims
- 1289US7480480B2Image heating apparatus with heat pipe for decreasing unevenness in temperature distributionCANON KK·Filed 2006·Granted Jan 20, 2009·11 cites·5 claims
- 1388US7424261B2Image heating apparatusCANON KK·Filed 2006·Granted Sep 9, 2008·8 cites·5 claims
- 1487US8297613B2Sheet feeding apparatus and image forming apparatusKATAYAMA HIROMASA·Filed 2010·Granted Oct 30, 2012·7 cites·9 claims
- 1587US7684745B2Image heating apparatusCANON KK·Filed 2008·Granted Mar 23, 2010·7 cites·5 claims
- 1687US7429037B2Sheet processing apparatus and image forming apparatus equipped with the sameCANON KK·Filed 2005·Granted Sep 30, 2008·9 cites·13 claims
- 1785US12360490B2Developer supply container and developer supplying systemCANON KK·Filed 2024·Granted Jul 15, 2025·0 cites·3 claims
- 1885US9671748B2Image forming apparatus having a developing cartridge with mounting interval regulationCANON KK·Filed 2016·Granted Jun 6, 2017·2 cites·8 claims
- 1985US7468099B2Image forming apparatusCANON KK·Filed 2005·Granted Dec 23, 2008·8 cites·6 claims
- 2085US7288059B2Sheet processing apparatus and image forming apparatus equipped with the sameCANON KK·Filed 2005·Granted Oct 30, 2007·11 cites·8 claims
- 2182US11940753B2Developer supply container and developer supplying systemCANON KK·Filed 2023·Granted Mar 26, 2024·0 cites·1 claims
- 2282US2024329593A1Developer supply container and developer supplying systemCANON KK·Filed 2024·Application pending·0 cites
- 2381US7410156B2Sheet processing apparatus and image forming apparatus equipped with the sameCANON KK·Filed 2007·Granted Aug 12, 2008·6 cites·13 claims
- 2479US7798490B2Sheet conveying apparatus, image forming apparatus, and image reading apparatusCANON KK·Filed 2008·Granted Sep 21, 2010·6 cites·6 claims
- 2579US5437192APhysical property measuring deviceMITSUBISHI CHEM CORP·Filed 1993·Granted Aug 1, 1995·62 cites·9 claims
- 2677US12038713B2Developer supply container and developer supplying systemCANON KK·Filed 2022·Granted Jul 16, 2024·0 cites·10 claims
- 2776US10732539B2Image forming apparatusCANON KK·Filed 2018·Granted Aug 4, 2020·1 cites·24 claims
- 2875US11650537B2Developer supply container and developer supplying systemCANON KK·Filed 2021·Granted May 16, 2023·0 cites·1 claims
- 2974US8342500B2Sheet conveying apparatus, image forming apparatus, and image reading apparatusCANON KK·Filed 2010·Granted Jan 1, 2013·3 cites·21 claims
- 3073US10303114B2Image forming unitCANON KK·Filed 2016·Granted May 28, 2019·1 cites·21 claims
- 3172US10558161B2Developer supply container and developer supplying systemCANON KK·Filed 2019·Granted Feb 11, 2020·0 cites·13 claims
- 3272US7530560B2Sheet processing apparatus and image forming apparatus provided with the sameCANON KK·Filed 2005·Granted May 12, 2009·3 cites·8 claims
- 3370US11150598B2Developer supply container and developer supplying systemCANON KK·Filed 2020·Granted Oct 19, 2021·0 cites·5 claims
- 3470US10884371B2Developer supply container and developer supplying systemCANON KK·Filed 2019·Granted Jan 5, 2021·0 cites·3 claims
- 3569US11480913B2Developer supply container and developer supplying systemCANON KK·Filed 2020·Granted Oct 25, 2022·0 cites·21 claims
- 3669US8342506B2Sheet conveyance apparatus, image forming apparatus, and image reading apparatusCANON KK·Filed 2010·Granted Jan 1, 2013·2 cites·12 claims
- 3768US7762540B2Sheet processing apparatus and image forming apparatus provided with the sameCANON KK·Filed 2009·Granted Jul 27, 2010·2 cites·7 claims
- 3865US7778583B2Endless belt conveying apparatus and toner image heating apparatusCANON KK·Filed 2007·Granted Aug 17, 2010·2 cites·10 claims
- 3961US10409215B2Image forming apparatus having a developing cartridge with mounting interval regulationCANON KK·Filed 2017·Granted Sep 10, 2019·0 cites·16 claims
- 4059US8528902B2Sheet conveying apparatus and image forming apparatus with differential roller diametersKATAYAMA HIROMASA·Filed 2011·Granted Sep 10, 2013·1 cites·8 claims
- 4150US10732553B2Image forming apparatus having developer accommodating container rotation detectionCANON KK·Filed 2019·Granted Aug 4, 2020·0 cites·30 claims
- 4249US7983607B2Image forming apparatus having an endless conveying belt with a 720 degree twistCANON KK·Filed 2008·Granted Jul 19, 2011·0 cites·7 claims
- 4347US2008038008A1Image forming apparatusCANON KK·Filed 2007·Application pending·0 cites
- 4445US8095051B2Image forming apparatus which achieves stability of a gap between an image bearing member and developer bearing memberKATAYAMA HIROMASA·Filed 2008·Granted Jan 10, 2012·0 cites·3 claims
- 4544US2007075483A1Sheet conveying apparatus and image forming apparatusCANON KK·Filed 2006·Application pending·0 cites
- 4642US8155561B2Image forming apparatusKATAYAMA HIROMASA·Filed 2009·Granted Apr 10, 2012·0 cites·7 claims
- 4741US2013002789A1Light scanning apparatus and electrophotographic image forming apparatusCANON KK·Filed 2012·Application pending·0 cites
- 4839US9645543B2Cleaning device with sealing of supporting plateCANON KK·Filed 2016·Granted May 9, 2017·0 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →