Inventor · disambiguated record
Yasuyuki Hirai
Also filed as: HIRAI YASUYUKI
42 granted patents·5 pending applications·855 citations·filing 1989–2015
98Inventor score
Files withCANON KK14HITACHI CHEMICAL CO LTD7MITA INDUSTRIAL CO LTD7KYOCERA MITA CORP4STEELCASE DEV CORP3
Top patents by PatentIndex Score
47 records- 0196US8651614B2Inkjet printing apparatus and ink discharge control methodSAKAMOTO ATSUSHI·Filed 2011·Granted Feb 18, 2014·36 cites·13 claims
- 0295US6663233B2Inkjet printing apparatus and ink supplying methodCANON KK·Filed 2002·Granted Dec 16, 2003·72 cites·18 claims
- 0395US5294963AToner cartridge having opening for discharging toner sealed with sealing member and method of stripping sealing memberMITA INDUSTRIAL CO LTD·Filed 1992·Granted Mar 15, 1994·56 cites·40 claims
- 0494US8807556B2Sheet conveying apparatus, printing apparatus, and processing apparatusSUGIYAMA NORIYUKI·Filed 2012·Granted Aug 19, 2014·27 cites·13 claims
- 0594US7547011B2Sheet feeding device and image forming apparatusCANON KK·Filed 2006·Granted Jun 16, 2009·15 cites·14 claims
- 0692US6748707B1Utility interface systemSTEELCASE DEV CORP·Filed 2001·Granted Jun 15, 2004·73 cites·53 claims
- 0791US5142335AElectrostatic latent image-developing device and toner cartridge used thereforMITA INDUSTRIAL CO LTD·Filed 1991·Granted Aug 25, 1992·43 cites·24 claims
- 0890US6783215B2Ink container, inkjet printing apparatus, and ink supplying methodCANON KK·Filed 2003·Granted Aug 31, 2004·40 cites·16 claims
- 0989US6948803B2Ink container, inkjet printing apparatus and ink supplying methodCANON KK·Filed 2003·Granted Sep 27, 2005·35 cites·85 claims
- 1088US7041772B2Method for producing benzoxazine resinHITACHI CHEMICAL CO LTD·Filed 2002·Granted May 9, 2006·41 cites·8 claims
- 1183US6267064B1Laboratory furniture unitSTEELCASE DEV CORP·Filed 1999·Granted Jul 31, 2001·174 cites·27 claims
- 1282US9890001B2Sheet feeding apparatus and printing apparatusCANON KK·Filed 2015·Granted Feb 13, 2018·3 cites·8 claims
- 1382US6523821B2Paper feeder apparatus for use with image forming apparatusKYOCERA MITA CORP·Filed 2001·Granted Feb 25, 2003·20 cites·15 claims
- 1480US5363177AMethod of stripping a sealing member from a toner cartridgeMITA INDUSTRIAL CO LTD·Filed 1993·Granted Nov 8, 1994·22 cites·4 claims
- 1575US7762549B2Recording apparatusCANON KK·Filed 2007·Granted Jul 27, 2010·4 cites·13 claims
- 1673US8944584B2Ink jet recording apparatus having charged conveying beltSAKAMOTO ATSUSHI·Filed 2010·Granted Feb 3, 2015·2 cites·22 claims
- 1772US6837921B2Ink tankCANON KK·Filed 2003·Granted Jan 4, 2005·16 cites·12 claims
- 1869US6250019B1Furniture arrangement configured to support overhead utilities and lightingSTEELCASE DEV CORP·Filed 1999·Granted Jun 26, 2001·37 cites·22 claims
- 1969USD437708SFurniture unitSTEELCASE DEV INC·Filed 1999·Granted Feb 20, 2001·16 cites·1 claims
- 2067US7538786B2Printing apparatusCANON KK·Filed 2007·Granted May 26, 2009·2 cites·6 claims
- 2167US6913339B2Head recovery device, head recovery method and ink jet recording apparatusCANON KK·Filed 2001·Granted Jul 5, 2005·10 cites·24 claims
- 2266US7605957B2Original document transport deviceKYOCERA MITA CORP·Filed 2005·Granted Oct 20, 2009·2 cites·6 claims
- 2366US6720077B2Resin composition, and use and method for preparing the sameHITACHI CHEMICAL CO LTD·Filed 2002·Granted Apr 13, 2004·12 cites·37 claims
- 2462US7041399B2Varnish for laminate or prepreg, laminate or prepreg obtained with this varnish, and printed circuit board made with this laminate or prepregHITACHI CHEMICAL CO LTD·Filed 2001·Granted May 9, 2006·2 cites·19 claims
- 2562US5761586ADeveloping device for image forming apparatus, toner container insertable into the developing device, and image forming apparatus provided therewithMITA INDUSTRIAL CO LTD·Filed 1997·Granted Jun 2, 1998·15 cites·15 claims
- 2660US8944585B2Printing apparatusHIRAI YASUYUKI·Filed 2011·Granted Feb 3, 2015·1 cites·15 claims
- 2759US5945222AThermosetting resin composition, cured product, prepreg, metal-clad laminate and wiring boardHITACHI CHEMICAL CO LTD·Filed 1997·Granted Aug 31, 1999·26 cites·20 claims
- 2858US7538150B2Dihydrobenzoxazine ring-containing resin, phenolic-triazine-aldehyde condensate and epoxy resinHITACHI CHEMICAL CO LTD·Filed 2005·Granted May 26, 2009·0 cites·26 claims
- 2956US7390571B2Varnish for laminate or prepreg, laminate or prepreg prepared using this varnish, and printed wiring board prepared using this laminate or prepregHITACHI CHEMICAL CO LTD·Filed 2006·Granted Jun 24, 2008·0 cites·23 claims
- 3056US6685308B2Image forming apparatusCANON KK·Filed 2002·Granted Feb 3, 2004·6 cites·9 claims
- 3156US6005064AThermosetting compounds, cured product thereof and method of preparing the thermosetting compoundHITACHI CHEMICAL CO LTD·Filed 1998·Granted Dec 21, 1999·14 cites·14 claims
- 3254US7097272B2Printing apparatus, print head performance recovery device and method, and piston pumpCANON KK·Filed 2004·Granted Aug 29, 2006·5 cites·27 claims
- 3354US6899412B2Ink jet recording apparatus and recovery mechanism portion of ink jet recording apparatusCANON KK·Filed 2003·Granted May 31, 2005·5 cites·8 claims
- 3452US2009224460A1Sheet feeding device and image forming apparatusCANON KK·Filed 2009·Application pending·0 cites
- 3549US8025289B2Recording apparatus performing skew correctionCANON KK·Filed 2009·Granted Sep 27, 2011·0 cites·14 claims
- 3649US5136341AImage forming apparatus having means for coordinating the input and discharge of copy paperMITA INDUSTRIAL CO LTD·Filed 1989·Granted Aug 4, 1992·8 cites·7 claims
- 3747US2004076805A1Thermosetting resin composition, and prepreg, laminate for circuit board, and printed circuit board each made therewithFiled 2002·Application pending·0 cites
- 3845US6718153B2Developing device for preventing thickening of the developer at both ends of a sleeveKYOCERA MITA CORP·Filed 2002·Granted Apr 6, 2004·3 cites·4 claims
- 3942US6430388B1Image forming machine having finisher for different length sheetsKYOCERA MITA CORP·Filed 2000·Granted Aug 6, 2002·2 cites·2 claims
- 4039US2009009922A1Electric-insulating sheet neutralizing device, neturalizing method and production methodTORAY INDUSTRIES·Filed 2006·Application pending·0 cites
- 4138US8641184B2Conveying mechanism and recording apparatus including the sameNISHIBERI NOZOMU·Filed 2010·Granted Feb 4, 2014·0 cites·8 claims
- 4238US7388736B2Static eliminator and a static eliminating method for an insulating sheet, a method for producing and insulating sheet, and an insulating sheetTORAY INDUSTRIES·Filed 2004·Granted Jun 17, 2008·0 cites·21 claims
- 4337US5337125AToner feeding deviceMITA INDUSTRIAL CO LTD·Filed 1992·Granted Aug 9, 1994·4 cites·21 claims
- 4433US5895139AImage forming device with a printer unit and a copying unitMITA INDUSTRIAL CO LTD·Filed 1997·Granted Apr 20, 1999·3 cites·13 claims
- 4533US2003007047A1Inkjet printing apparatus and ink supplying methodFiled 2002·Application pending·0 cites
- 4633US2003007045A1Ink container, inkjet printing apparatus, and ink supplying methodFiled 2002·Application pending·0 cites
- 4726US5378984AEB type IC testerADVANTEST CORP·Filed 1993·Granted Jan 3, 1995·3 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →