Inventor · disambiguated record
Hiroaki Sakai
Also filed as: SAKAI HIROAKI
118 granted patents·15 pending applications·2,176 citations·filing 1981–2025
99Inventor score
Files withSEIKO EPSON CORP37CANON KK27NGK INSULATORS LTD19MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8MITSUBISHI ELECTRIC CORP8
Top patents by PatentIndex Score
133 records- 0199US10889123B2Ink refill container, ink refill system, and ink refill adapterSEIKO EPSON CORP·Filed 2020·Granted Jan 12, 2021·7 cites·23 claims
- 0299US6603939B1Developing apparatus, process cartridge, connecting method between developing frame and developer frame, and flexible sealCANON KK·Filed 2001·Granted Aug 5, 2003·175 cites·31 claims
- 0398US11179944B2Ink refill container, ink refill system, and ink refill adapterSEIKO EPSON CORP·Filed 2020·Granted Nov 23, 2021·3 cites·22 claims
- 0498US8369763B2Image heating apparatus and pressure roller used for image heating apparatusCANON KK·Filed 2012·Granted Feb 5, 2013·23 cites·16 claims
- 0598US7366455B2Image fixing apparatus with heater and heater holder contacting the heaterCANON KK·Filed 2005·Granted Apr 29, 2008·44 cites·6 claims
- 0698US7283145B2Image heating apparatus and heater thereforCANON KK·Filed 2005·Granted Oct 16, 2007·65 cites·13 claims
- 0798US7193181B2Image heating apparatus and heater used thereforCANON KK·Filed 2005·Granted Mar 20, 2007·62 cites·38 claims
- 0898US6522347B1Display apparatus, portable information processing apparatus, information recording medium, and electronic apparatusSEIKO EPSON CORP·Filed 2000·Granted Feb 18, 2003·442 cites·27 claims
- 0997US8224223B2Image heating apparatus and pressure roller used for image heating apparatusSAKAKIBARA HIROYUKI·Filed 2011·Granted Jul 17, 2012·27 cites·8 claims
- 1097US8005413B2Image heating apparatus and pressure roller used for image heating apparatusCANON KK·Filed 2008·Granted Aug 23, 2011·29 cites·9 claims
- 1197US7974563B2Image heating apparatus and pressure roller therein having metal core and two elastic layers with different thermal conductivitiesCANON KK·Filed 2008·Granted Jul 5, 2011·31 cites·5 claims
- 1296US10717287B2Ink refill container, ink refill system, and ink refill adapterSEIKO EPSON CORP·Filed 2017·Granted Jul 21, 2020·6 cites·20 claims
- 1395US8401450B2Pressing member and image heating member using the pressing memberSEKIHARA YUKO·Filed 2010·Granted Mar 19, 2013·16 cites·14 claims
- 1495US5682576AFixing deviceCANON KK·Filed 1995·Granted Oct 28, 1997·81 cites·9 claims
- 1594US8626046B2Image heating apparatus, pressure roller to be used in the image heating apparatus, and manufacturing method for the pressure rollerSEKIHARA YUKO·Filed 2009·Granted Jan 7, 2014·23 cites·13 claims
- 1694US7520583B2Printing device, printing program, printing method, image processing device, image processing program, image processing method, and recording medium in which the program is storedSEIKO EPSON CORP·Filed 2006·Granted Apr 21, 2009·18 cites·7 claims
- 1791US5819134AFixing apparatus having a temperature control system for a plurality of heatersCANON KK·Filed 1996·Granted Oct 6, 1998·54 cites·11 claims
- 1891USD341823SPen based computerSEIKO EPSON CORP·Filed 1992·Granted Nov 30, 1993·38 cites·1 claims
- 1991US4412823AOral cavity cleanerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1981·Granted Nov 1, 1983·157 cites·11 claims
- 2090US12296600B2Ink refill container, ink refill system, and ink refill adapterSEIKO EPSON CORP·Filed 2024·Granted May 13, 2025·0 cites·40 claims
- 2189US9254681B2Textile-printing apparatusSEIKO EPSON CORP·Filed 2015·Granted Feb 9, 2016·3 cites·3 claims
- 2289US9158227B1Developing roller and developing apparatus and image forming apparatus using the sameKYOCERA DOCUMENT SOLUTIONS INC·Filed 2015·Granted Oct 13, 2015·4 cites·7 claims
- 2389US7833924B2Yttrium oxide-containing material, component of semiconductor manufacturing equipment, and method of producing yttrium oxide-containing materialNGK INSULATORS LTD·Filed 2008·Granted Nov 16, 2010·14 cites·15 claims
- 2489US6931064B2Motion picture data converter, and computer productMITSUBISHI ELECTRIC CORP·Filed 2002·Granted Aug 16, 2005·43 cites·12 claims
- 2587US9352577B2Ink tank and printerSEIKO EPSON CORP·Filed 2015·Granted May 31, 2016·2 cites·11 claims
- 2687US7011803B2Honeycomb structure and method for its manufactureNGK INSULATORS LTD·Filed 2001·Granted Mar 14, 2006·41 cites·24 claims
- 2787US6539184B2Image forming apparatus with current controlCANON KK·Filed 2001·Granted Mar 25, 2003·28 cites·12 claims
- 2886US11938739B2Ink refill container, ink refill system, and ink refill adapterSEIKO EPSON CORP·Filed 2023·Granted Mar 26, 2024·0 cites·16 claims
- 2986US10009271B2Routing method and network transmission apparatusFUJITSU LTD·Filed 2016·Granted Jun 26, 2018·6 cites·5 claims
- 3086US6815038B2Honeycomb structureNGK INSULATORS LTD·Filed 2002·Granted Nov 9, 2004·34 cites·3 claims
- 3186US6615002B2Image forming apparatus and process cartridge for applying an alternating current to a charging member or charging means for charging an image bearing memberCANON KK·Filed 2001·Granted Sep 2, 2003·25 cites·36 claims
- 3286US6397017B1Developer amount detecting method, developing device, process cartridge and electrophotographic image forming apparatusCANON KK·Filed 2000·Granted May 28, 2002·26 cites·66 claims
- 3386US5904871AImage heating deviceCANON KK·Filed 1996·Granted May 18, 1999·36 cites·4 claims
- 3486USD311741SPortable computerSEIKO EPSON CORP·Filed 1989·Granted Oct 30, 1990·23 cites·1 claims
- 3586US2025236113A1Ink refill container, ink refill system, and ink refill adapterSEIKO EPSON CORP·Filed 2025·Application pending·0 cites
- 3684US6764742B2Honeycomb structure body and production method thereofNGK INSULATORS LTD·Filed 2002·Granted Jul 20, 2004·24 cites·28 claims
- 3782US7298733B2Internet communication system, internet communication method, session management server, radio communication device, communication relay server, and programIP TALK CORP·Filed 2002·Granted Nov 20, 2007·63 cites·23 claims
- 3881US7328964B2Image processor, image processing method, printer, printing method, program, and recording mediumSEIKO EPSON CORP·Filed 2006·Granted Feb 12, 2008·6 cites·9 claims
- 3981US5915145AImage forming apparatusCANON KK·Filed 1997·Granted Jun 22, 1999·30 cites·14 claims
- 4080US11639060B2Ink refill container, ink refill system, and ink refill adapterSEIKO EPSON CORP·Filed 2021·Granted May 2, 2023·0 cites·20 claims
- 4180US8956568B2Sample transfer mechanismOHISO AKIHIRO·Filed 2011·Granted Feb 17, 2015·8 cites·14 claims
- 4280US5492590AMethod for peeling the interlayer of a two-sided adhesive tapeMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1994·Granted Feb 20, 1996·44 cites·6 claims
- 4379USD308051SPortable computerSEIKO EPSON CORP·Filed 1987·Granted May 22, 1990·17 cites·1 claims
- 4478US12076744B2Assembly, method for using assembly, applying device, method for using applying device, method for replenishing materialTHREE BOND CO LTD·Filed 2019·Granted Sep 3, 2024·1 cites·10 claims
- 4577US9313130B2Routing method and network transmission apparatusFUJITSU LTD·Filed 2014·Granted Apr 12, 2016·4 cites·9 claims
- 4677USD740956SClinical analyzerHITACHI HIGH TECH CORP·Filed 2015·Granted Oct 13, 2015·18 cites·1 claims
- 4777US6777114B2Silicon carbide-based porous body and process for production thereofNGK INSULATORS LTD·Filed 2001·Granted Aug 17, 2004·21 cites·22 claims
- 4876US7442662B2High-heat conductive Si-containing material and its manufacturing methodNGK INSULATORS LTD·Filed 2006·Granted Oct 28, 2008·3 cites·4 claims
- 4974US7762643B2Image forming apparatus, image forming program, image forming method, data generating apparatus, data generating program, data generating method, and recording medium with the program recorded thereinSEIKO EPSON CORP·Filed 2005·Granted Jul 27, 2010·4 cites·6 claims
- 5073US7229940B2Dense cordierite based sintered body and method of manufacturing the sameNGK INSULATORS LTD·Filed 2005·Granted Jun 12, 2007·3 cites·8 claims
Showing the top 50 of 133 patent records by PatentIndex Score.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →