Inventor · disambiguated record
Masayuki Ishii
Also filed as: ISHII MASAYUKI
63 granted patents·16 pending applications·1,027 citations·filing 1984–2025
99Inventor score
Top patents by PatentIndex Score
79 records- 0199US7374851B2Toner, and, developer, toner container, process cartridge, image forming apparatus and image forming methodRICOH KK·Filed 2006·Granted May 20, 2008·67 cites·25 claims
- 0299US7318989B2Toner, developer, toner container, process cartridge, image forming apparatus, and image forming methodRICOH KK·Filed 2006·Granted Jan 15, 2008·71 cites·14 claims
- 0398US7455942B2Toner, developer, toner container, process cartridge, image forming apparatus, and image forming method using the sameRICOH KK·Filed 2005·Granted Nov 25, 2008·41 cites·19 claims
- 0498US7261989B2Toner for developing electrostatic images, developer, image forming method, and image forming apparatusRICOH KK·Filed 2006·Granted Aug 28, 2007·49 cites·16 claims
- 0598US7258959B2Toner for electrophotography and image forming apparatusRICOH KK·Filed 2005·Granted Aug 21, 2007·42 cites·34 claims
- 0696US7521164B2Toner, and, developer, toner container, process cartridge, image forming apparatus and image forming methodRICOH KK·Filed 2008·Granted Apr 21, 2009·22 cites·7 claims
- 0792US7390607B2Toner, production process for the same, and image forming methodRICOH KK·Filed 2006·Granted Jun 24, 2008·11 cites·14 claims
- 0892US5458664AParticulate trap for purifying diesel engine exhaustSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted Oct 17, 1995·91 cites·22 claims
- 0991US7566521B2Toner, developer, toner container, process cartridge, image forming apparatus, and image forming methodRICOH KK·Filed 2007·Granted Jul 28, 2009·11 cites·16 claims
- 1091US7354690B2Toner and method for producing the same, and, developer, toner-containing container, process cartridge, image forming apparatus and image forming methodRICOH KK·Filed 2006·Granted Apr 8, 2008·11 cites·15 claims
- 1190US4728370AAmorphous photovoltaic elementsSUMITOMO ELECTRIC INDUSTRIES·Filed 1986·Granted Mar 1, 1988·70 cites·5 claims
- 1289US7396627B2Method of preparing a toner, developer including the toner, container containing the toner, and image forming method and process cartridge using the tonerRICOH KK·Filed 2005·Granted Jul 8, 2008·11 cites·35 claims
- 1389US7370804B2IC card readerHITACHI OMRON TERMINAL SOLUTIONS CORP·Filed 2005·Granted May 13, 2008·22 cites·4 claims
- 1488US7713657B2Battery, charging apparatus and electronic deviceSONY CORP·Filed 2005·Granted May 11, 2010·6 cites·8 claims
- 1588US7396625B2Toner, method for producing the same, and image-forming method using the sameRICOH KK·Filed 2006·Granted Jul 8, 2008·9 cites·13 claims
- 1686US5812153AInk jet printing apparatus capable of simultaneously printing an image on both sides of printing sheetMITA INDUSTRIAL CO LTD·Filed 1995·Granted Sep 22, 1998·63 cites·15 claims
- 1786US5640669AProcess for preparing metallic porous body, electrode substrate for battery and process for preparing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 1995·Granted Jun 17, 1997·51 cites·23 claims
- 1884US9807896B2ConverterYOKOGAWA ELECTRIC CORP·Filed 2015·Granted Oct 31, 2017·4 cites·4 claims
- 1982US7875385B2Battery, charging apparatus and electronic deviceSONY CORP·Filed 2010·Granted Jan 25, 2011·2 cites·14 claims
- 2082US7803508B2Toner as well as developer and image forming method using the sameRICOH KK·Filed 2007·Granted Sep 28, 2010·6 cites·14 claims
- 2178US8105743B2Fine organic silicone particle for latent electrostatic image developing toners, external additive for toners, toner for developing latent electrostatic image, and two-component developerISHII MASAYUKI·Filed 2008·Granted Jan 31, 2012·5 cites·12 claims
- 2278US7432032B2Toner, production process for the same, and image forming methodRICOH KK·Filed 2008·Granted Oct 7, 2008·4 cites·11 claims
- 2377US7575842B2Toner and, developer, toner-containing container, process cartridge, image forming apparatus and image forming methodRICOH KK·Filed 2007·Granted Aug 18, 2009·4 cites·17 claims
- 2477US7556195B2Card reader and writerHITACHI OMRON TERMINAL SOLUTIONS CORP·Filed 2005·Granted Jul 7, 2009·8 cites·9 claims
- 2577US2025334895A1Toner, developing agent, developing agent container, image forming method, and image forming apparatusISHII MASAYUKI·Filed 2025·Application pending·0 cites
- 2676US7629104B2Carrier, method for producing the carrier, developer, and image forming method using the developerRICOH KK·Filed 2006·Granted Dec 8, 2009·4 cites·11 claims
- 2771US5196687ACard reader having locking mechanismOMRON TATEISI ELECTRONICS CO·Filed 1989·Granted Mar 23, 1993·45 cites·4 claims
- 2870US8927186B2Toner, and developer, image forming method and process cartridge using the tonerISHII MASAYUKI·Filed 2010·Granted Jan 6, 2015·1 cites·9 claims
- 2970US5597665APorous metal body, process for producing the same and battery plate formed therefromSUMITOMO ELECTRIC INDUSTRIES·Filed 1995·Granted Jan 28, 1997·38 cites·8 claims
- 3069US7662512B2Rectangular storage batteryHONDA MOTOR CO LTD·Filed 2006·Granted Feb 16, 2010·2 cites·3 claims
- 3169US6598794B1Data media processing deviceOMRON TATEISI ELECTRONICS CO·Filed 2000·Granted Jul 29, 2003·20 cites·7 claims
- 3267US10754270B2Toner, production method of toner, image forming method, image forming apparatus, and process cartridgeKITADA NAOKO·Filed 2018·Granted Aug 25, 2020·1 cites·9 claims
- 3367US10458881B2Pipe evaluation method, measurement device, and pipe evaluation systemNAT UNIV CORP TOTTORI UNIV·Filed 2017·Granted Oct 29, 2019·1 cites·15 claims
- 3466US5210431AOhmic connection electrodes for p-type semiconductor diamondsSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted May 11, 1993·27 cites·3 claims
- 3562US11281118B2Toner, toner accommodating container, developer, developing device, process cartridge, image forming apparatus, and image forming methodRICOH CO LTD·Filed 2020·Granted Mar 22, 2022·0 cites·18 claims
- 3662US5505757ACorrosion-resistant metal filtersSUMITOMO ELECTRIC INDUSTRIES·Filed 1994·Granted Apr 9, 1996·21 cites·7 claims
- 3759US8043785B2Carrier, method for producing the same, developer, and image forming methodRICOH CO LTD·Filed 2007·Granted Oct 25, 2011·1 cites·15 claims
- 3859US5075757AOhmic contact electrodes for semiconductor diamondsSUMITOMO ELECTRIC INDUSTRIES·Filed 1990·Granted Dec 24, 1991·19 cites·9 claims
- 3958US9182695B2External additive for toner, toner covered with external additive, development agent, toner container, and image forming apparatusISHII MASAYUKI·Filed 2013·Granted Nov 10, 2015·0 cites·18 claims
- 4058US5776419AExhaust purifying filter material and method for manufacturing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 1995·Granted Jul 7, 1998·22 cites·5 claims
- 4157US12429786B2Electronic device and method for producing the same, image forming method, and image forming apparatusKAMI HIDETOSHI·Filed 2020·Granted Sep 30, 2025·0 cites·6 claims
- 4257US8778583B2Toner, developer, image forming apparatus, and process cartridgeISHII MASAYUKI·Filed 2012·Granted Jul 15, 2014·0 cites·10 claims
- 4357US8277971B2Battery, charging apparatus and electronic deviceYAMASAKI TAKAYOSHI·Filed 2010·Granted Oct 2, 2012·0 cites·16 claims
- 4456US5710600APortable apparatus for real time video display of location and for playing back audio program materialSONY CORP·Filed 1995·Granted Jan 20, 1998·26 cites·22 claims
- 4555US9176409B2Toner, development agent, toner container, and image forming apparatusISHII MASAYUKI·Filed 2013·Granted Nov 3, 2015·0 cites·6 claims
- 4655US8652721B2Toner, developer, and method of manufacturing tonerISHII MASAYUKI·Filed 2012·Granted Feb 18, 2014·0 cites·14 claims
- 4754US10554558B2Data diode deviceMITSUBISHI ELECTRIC CORP·Filed 2015·Granted Feb 4, 2020·1 cites·6 claims
- 4853US6020089AElectrode plate for batterySUMITOMO ELECTRIC INDUSTRIES·Filed 1995·Granted Feb 1, 2000·19 cites·7 claims
- 4953US5830415AFilter member for purifying exhaust gas and method for manufacturing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 1995·Granted Nov 3, 1998·19 cites·7 claims
- 5053US5506295AInkMITA INDUSTRIAL CO LTD·Filed 1995·Granted Apr 9, 1996·17 cites·16 claims
Showing the top 50 of 79 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →