Inventor · disambiguated record
Toshiaki Hirosawa
Also filed as: HIROSAWA TOSHIAKI
81 granted patents·3 pending applications·2,106 citations·filing 1985–2020
99Inventor score
Top patents by PatentIndex Score
84 records- 0198US7686423B2Liquid discharge head and manufacturing method thereofCANON KK·Filed 2007·Granted Mar 30, 2010·42 cites·7 claims
- 0298US6338552B1Ink refilling method and apparatus, ink container refilled therewith and ink jet apparatus comprising ink refilling apparatusCANON KK·Filed 1999·Granted Jan 15, 2002·133 cites·6 claims
- 0397US7775638B2Ink jet recording head and recording apparatusCANON KK·Filed 2005·Granted Aug 17, 2010·47 cites·6 claims
- 0496US7533960B2Liquid discharge head, and method of manufacturing liquid discharge headCANON KK·Filed 2006·Granted May 19, 2009·60 cites·6 claims
- 0596US5523780AInk jet recording apparatus and ink cartridge mountable on said apparatusCANON KK·Filed 1993·Granted Jun 4, 1996·133 cites·2 claims
- 0694US6000792AInk jet apparatus provided with an improved recovery mechanismCANON KK·Filed 1996·Granted Dec 14, 1999·97 cites·25 claims
- 0794US5561448AInk jet recording apparatus for recovering recording headCANON KK·Filed 1993·Granted Oct 1, 1996·83 cites·16 claims
- 0893US5173717AInk jet recording head in which the ejection elements are driven in blocksCANON KK·Filed 1991·Granted Dec 22, 1992·77 cites·12 claims
- 0992US10391767B2Liquid ejection headCANON KK·Filed 2018·Granted Aug 27, 2019·4 cites·19 claims
- 1092US6120140AInk supplying apparatus and ink recording apparatus having sameCANON KK·Filed 1998·Granted Sep 19, 2000·84 cites·9 claims
- 1192US5164747AInk jet head with testing resistorsCANON KK·Filed 1990·Granted Nov 17, 1992·84 cites·20 claims
- 1291US5231424AInk jet recording apparatus with efficient circulation recoveryCANON KK·Filed 1991·Granted Jul 27, 1993·69 cites·23 claims
- 1390US7980676B2Liquid ejection head including member supporting liquid ejection substrateCANON KK·Filed 2008·Granted Jul 19, 2011·11 cites·2 claims
- 1490US7789499B2Ink jet print head and method of manufacturing ink jet print headCANON KK·Filed 2008·Granted Sep 7, 2010·12 cites·16 claims
- 1590US6471901B1Method for manufacturing ink jet recording head using thermohardening fillerCANON KK·Filed 2000·Granted Oct 29, 2002·40 cites·6 claims
- 1690US6257703B1Ink jet recording headCANON KK·Filed 1997·Granted Jul 10, 2001·74 cites·11 claims
- 1789US10870279B2Method of manufacturing liquid supply unitCANON KK·Filed 2017·Granted Dec 22, 2020·3 cites·5 claims
- 1889US10525711B2Method of manufacturing liquid ejecting headCANON KK·Filed 2017·Granted Jan 7, 2020·3 cites·11 claims
- 1989US7690767B2Ink jet recording head and ink jet recording apparatusCANON KK·Filed 2005·Granted Apr 6, 2010·11 cites·5 claims
- 2089US5398053ALiquid jet recording apparatus having auxiliary recording headCANON KK·Filed 1993·Granted Mar 14, 1995·67 cites·33 claims
- 2188US9358779B2Apparatus and method for driving the sameCANON KK·Filed 2015·Granted Jun 7, 2016·3 cites·10 claims
- 2288US5682190AInk jet head and apparatus having an air chamber for improving performanceCANON KK·Filed 1993·Granted Oct 28, 1997·63 cites·11 claims
- 2388US4684962AInk tube connecting system in a liquid jet recording apparatusCANON KK·Filed 1985·Granted Aug 4, 1987·50 cites·12 claims
- 2487US8894182B2Liquid discharge headOSAKI YASUHIKO·Filed 2011·Granted Nov 25, 2014·6 cites·9 claims
- 2587US6557989B1Print head and ink jet printing apparatusCANON KK·Filed 2000·Granted May 6, 2003·27 cites·4 claims
- 2687US5220345AInk jet recording apparatusCANON KK·Filed 1991·Granted Jun 15, 1993·58 cites·14 claims
- 2786US10532574B2Method of manufacturing liquid ejecting head, and liquid ejecting headCANON KK·Filed 2017·Granted Jan 14, 2020·2 cites·5 claims
- 2886US6652702B2Ink jet recording head and method for manufacturing ink jet recording headCANON KK·Filed 2001·Granted Nov 25, 2003·30 cites·10 claims
- 2986US6536868B1Liquid ejection type print head, printing apparatus provided with same and a method for producing a liquid ejection type print headCANON KK·Filed 2000·Granted Mar 25, 2003·28 cites·21 claims
- 3086US5343227AInk jet recording apparatus and ink jet recording head with means reducing the amount of warpCANON KK·Filed 1991·Granted Aug 30, 1994·54 cites·16 claims
- 3186US4775871AInk jet recording apparatus having a flexible ink supply connectionCANON KK·Filed 1987·Granted Oct 4, 1988·42 cites·13 claims
- 3285US10384457B2Liquid ejection head unit and liquid ejecting apparatusCANON KK·Filed 2018·Granted Aug 20, 2019·2 cites·9 claims
- 3385US9114624B2Liquid discharge head, liquid discharge apparatus, and liquid filling methodYAMAMOTO AKIRA·Filed 2011·Granted Aug 25, 2015·4 cites·16 claims
- 3485US6910759B2Liquid discharge recording head cartridge and liquid discharge recording apparatusCANON KK·Filed 2001·Granted Jun 28, 2005·28 cites·10 claims
- 3584US7771020B2Ink jet recording headCANON KK·Filed 2007·Granted Aug 10, 2010·7 cites·9 claims
- 3682US8177330B2Liquid discharge head, ink jet recording head and ink jet recording apparatusSUGANUMA TAKATOSHI·Filed 2006·Granted May 15, 2012·19 cites·8 claims
- 3782US6896359B1Ink jet recording head and method for manufacturing ink jet recording headCANON KK·Filed 2003·Granted May 24, 2005·23 cites·7 claims
- 3882US6752492B2Print head and ink jet printing apparatusCANON KK·Filed 2002·Granted Jun 22, 2004·19 cites·30 claims
- 3982US5357268AInk jet recording head in which the ejection elements are driven in blocksCANON KK·Filed 1992·Granted Oct 18, 1994·38 cites·17 claims
- 4081US5997122AInk jet recording apparatus capable of performing liquid droplet diameter random variable recording and ink jet recording method using ink for liquid droplet random variable recordingCANON KK·Filed 1996·Granted Dec 7, 1999·43 cites·53 claims
- 4179USD395916SCombined ink tank holder and printing head for printerCANON KK·Filed 1997·Granted Jul 7, 1998·22 cites·1 claims
- 4279US5646659AInk jet recording apparatus, and method with control of ink drops and ink mistCANON KK·Filed 1992·Granted Jul 8, 1997·38 cites·35 claims
- 4378US7625072B2Ink jet recording head and recording apparatusCANON KK·Filed 2005·Granted Dec 1, 2009·5 cites·6 claims
- 4478US6637865B1Liquid discharge head, driving method therefor, and cartridge, and image forming apparatusCANON KK·Filed 2000·Granted Oct 28, 2003·19 cites·31 claims
- 4578USD392672SCombined ink tank holder and printing head for printerCANON KK·Filed 1997·Granted Mar 24, 1998·21 cites·1 claims
- 4678US5457485AInk jet recording apparatusCANON KK·Filed 1993·Granted Oct 10, 1995·35 cites·17 claims
- 4777US10618327B2Liquid ejection head unit and liquid ejection apparatusCANON KK·Filed 2018·Granted Apr 14, 2020·1 cites·20 claims
- 4877US8801156B2Flow passage assembly and method for manufacturing flow passage assembly, inkjet recording head, and recording apparatusSHIMAMURA RYO·Filed 2012·Granted Aug 12, 2014·3 cites·12 claims
- 4977US6024439AInk-jet head having projecting portionCANON KK·Filed 1996·Granted Feb 15, 2000·36 cites·23 claims
- 5076US8157356B2Ink jet printing headYAMAMOTO AKIRA·Filed 2009·Granted Apr 17, 2012·4 cites·6 claims
Showing the top 50 of 84 patent records by PatentIndex Score.
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