Inventor · disambiguated record
Katsuhiko Oba
Also filed as: OBA KATSUHIKO
25 granted patents·5 pending applications·342 citations·filing 2001–2025
96Inventor score
Top patents by PatentIndex Score
30 records- 0198US8805237B2Process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2013·Granted Aug 12, 2014·21 cites·5 claims
- 0298US8385775B2Process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2011·Granted Feb 26, 2013·23 cites·12 claims
- 0398US8155557B2Process cartridge and electrophotographic image forming apparatusKANNO KAZUHIKO·Filed 2010·Granted Apr 10, 2012·27 cites·13 claims
- 0498US8090292B2Process cartridge and electrophotographic image forming apparatusKANNO KAZUHIKO·Filed 2011·Granted Jan 3, 2012·26 cites·6 claims
- 0598US8059988B2Process cartridge and electrophotographic image forming apparatusKANNO KAZUHIKO·Filed 2008·Granted Nov 15, 2011·43 cites·16 claims
- 0698US7756441B2Process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2007·Granted Jul 13, 2010·38 cites·14 claims
- 0797US8494410B2Process cartridge and electrophotographic image forming apparatusKANNO KAZUHIKO·Filed 2012·Granted Jul 23, 2013·21 cites·8 claims
- 0897US8437661B2Process cartridge and electrophotographic image forming apparatusKANNO KAZUHIKO·Filed 2012·Granted May 7, 2013·21 cites·9 claims
- 0997US8170445B2Process cartridge and electrophotographic image forming apparatusKANNO KAZUHIKO·Filed 2011·Granted May 1, 2012·23 cites·14 claims
- 1097US8170444B2Process cartridge and electrophotographic image forming apparatusKANNO KAZUHIKO·Filed 2007·Granted May 1, 2012·27 cites·23 claims
- 1196US9310762B2Process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2014·Granted Apr 12, 2016·11 cites·5 claims
- 1293US12271136B2Image forming apparatus including a display unit for displaying information about a procedure for replenishing developerCANON KK·Filed 2023·Granted Apr 8, 2025·1 cites·9 claims
- 1393US7107000B2Image heating apparatus having flexible sleeveCANON KK·Filed 2005·Granted Sep 12, 2006·16 cites·24 claims
- 1491US11796947B2Image forming apparatus including a display unit for displaying information about a procedure for replenishing developerCANON KK·Filed 2022·Granted Oct 24, 2023·1 cites·5 claims
- 1587US9575437B2Image forming apparatus having widthwise adjustment of endless beltCANON KK·Filed 2015·Granted Feb 21, 2017·3 cites·11 claims
- 1686US11454912B2Image forming apparatus including a display unit for displaying information about a procedure for replenishing developerCANON KK·Filed 2021·Granted Sep 27, 2022·1 cites·8 claims
- 1785US7283776B2Image forming apparatusCANON KK·Filed 2005·Granted Oct 16, 2007·9 cites·17 claims
- 1882US2025271798A1Image forming apparatusCANON KK·Filed 2025·Application pending·0 cites
- 1977US9310758B2Image forming apparatusCANON KK·Filed 2015·Granted Apr 12, 2016·2 cites·10 claims
- 2076US7010256B2Image heating apparatus having recording medium conveying nip nonuniform in pressure distributionCANON KK·Filed 2003·Granted Mar 7, 2006·15 cites·4 claims
- 2172US12147190B2Image forming apparatusCANON KK·Filed 2023·Granted Nov 19, 2024·0 cites·14 claims
- 2271US11754946B2Image forming apparatusCANON KK·Filed 2022·Granted Sep 12, 2023·0 cites·19 claims
- 2370US8737892B2Image forming apparatusOBA KATSUHIKO·Filed 2011·Granted May 27, 2014·2 cites·15 claims
- 2468US11586143B2Image forming apparatusCANON KK·Filed 2021·Granted Feb 21, 2023·0 cites·14 claims
- 2568US6543758B2Image forming apparatusCANON KK·Filed 2001·Granted Apr 8, 2003·11 cites·17 claims
- 2665US11474452B2Image forming apparatus including an attachment portion to which to attach a supply container for supplying a developerCANON KK·Filed 2021·Granted Oct 18, 2022·0 cites·13 claims
- 2764US2024358458A1Continuum robot systemCANON KK·Filed 2024·Application pending·0 cites
- 2863US2024315681A1Supporting apparatus, and manufacturing method for supporting apparatusCANON KK·Filed 2024·Application pending·0 cites
- 2963US2024407866A1Continuum robotCANON KK·Filed 2024·Application pending·0 cites
- 3040US2008145122A1Image forming apparatusCANON KK·Filed 2007·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →