Inventor · disambiguated record
Hiroyuki Ichikawa
Also filed as: ICHIKAWA HIROYUKI
133 granted patents·26 pending applications·2,308 citations·filing 1985–2025
99Inventor score
Files withCANON KK47TOKAI RUBBER IND LTD27AISIN SEIKI22SUMITOMO RIKO CO LTD8SUMITOMO ELECTRIC INDUSTRIES7
Top patents by PatentIndex Score
159 records- 0193US5617224AImae processing apparatus having mosaic processing feature that decreases image resolution without changing image size or the number of pixelsCANON KK·Filed 1994·Granted Apr 1, 1997·121 cites·18 claims
- 0292US5680230AImage processing method and apparatus thereofCANON KK·Filed 1994·Granted Oct 21, 1997·120 cites·25 claims
- 0392US5038208AImage forming apparatus with a function for correcting recording density unevenessCANON KK·Filed 1988·Granted Aug 6, 1991·69 cites·62 claims
- 0488US6318410B1Connecting structureTOKAI RUBBER IND LTD·Filed 2000·Granted Nov 20, 2001·31 cites·15 claims
- 0588US6254069B1Active vibration damping system having controller for generating pulse signal for oscillation of oscillating plate partially defining fluid chambersTOKAI RUBBER IND LTD·Filed 1998·Granted Jul 3, 2001·58 cites·16 claims
- 0686US9175739B2Engine mount and power unit vibration damping support structureSUMITOMO RIKO CO LTD·Filed 2014·Granted Nov 3, 2015·11 cites·3 claims
- 0786US5748773AImage processing apparatusCANON KK·Filed 1994·Granted May 5, 1998·71 cites·18 claims
- 0885US4958236AImage processing method and apparatus thereforCANON KK·Filed 1988·Granted Sep 18, 1990·47 cites·70 claims
- 0984US7645658B2Method of manufacturing silicon carbide semiconductor deviceDENSO CORP·Filed 2007·Granted Jan 12, 2010·11 cites·12 claims
- 1084US6101994ACylinder block structureISUZU MOTORS LTD·Filed 1999·Granted Aug 15, 2000·29 cites·10 claims
- 1183US6264181B1Pneumatically operated active vibration damping device having air chamber whose volume is controllableTOKAI RUBBER IND LTD·Filed 2000·Granted Jul 24, 2001·24 cites·19 claims
- 1282US7281522B1Acceleration sensor status detecting apparatusTOKAI RUBBER IND LTD·Filed 2007·Granted Oct 16, 2007·12 cites·4 claims
- 1382US5056354ARoad condition monitoring systemAISIN SEIKI·Filed 1990·Granted Oct 15, 1991·28 cites·6 claims
- 1482US4912641AAntiskid control systemAISIN SEIKI·Filed 1988·Granted Mar 27, 1990·22 cites·4 claims
- 1581US5882048AHose connecting structureTOKAI RUBBER IND LTD·Filed 1997·Granted Mar 16, 1999·43 cites·33 claims
- 1681US5634699AAnti-skid control system for a four-wheel drive vehicleAISIN SEIKI·Filed 1995·Granted Jun 3, 1997·33 cites·5 claims
- 1781US5444556AImage forming apparatus for forming a pattern image corresponding to a color of an imput imageCANON KK·Filed 1994·Granted Aug 22, 1995·51 cites·21 claims
- 1881US5214642AATM switching system and adaptation processing apparatusHITACHI LTD·Filed 1991·Granted May 25, 1993·108 cites·22 claims
- 1979US8993416B2Method of manufacturing semiconductor deviceYUI KEIICHI·Filed 2011·Granted Mar 31, 2015·5 cites·10 claims
- 2079US5113252AImage processing apparatus including means for performing electrical thinning and fattening processingCANON KK·Filed 1990·Granted May 12, 1992·49 cites·42 claims
- 2178US5046787AAnti-skid control systemAISIN SEIKI·Filed 1990·Granted Sep 10, 1991·25 cites·2 claims
- 2277US7025341B2Pneumatically operated fluid filled engine mount for vehiclesTOKAI RUBBER IND LTD·Filed 2004·Granted Apr 11, 2006·20 cites·3 claims
- 2377US6767518B2Reforming apparatusNISSAN MOTOR·Filed 2001·Granted Jul 27, 2004·20 cites·15 claims
- 2477US6678177B2Driving method of a bridge circuit for driving an inductance loadAISIN SEIKI·Filed 2002·Granted Jan 13, 2004·24 cites·11 claims
- 2577US5676434AAnti-skid control based upon estimated coefficient of frictionAISIN SEIKI·Filed 1995·Granted Oct 14, 1997·29 cites·10 claims
- 2677US5060059AColor image processing apparatus for converting color-sequential image data into color-parallel image dataCANON KK·Filed 1989·Granted Oct 22, 1991·27 cites·15 claims
- 2776US6907969B2Active type dynamic damperTOKAI RUBBER IND LTD·Filed 2003·Granted Jun 21, 2005·17 cites·3 claims
- 2876US6808168B2Fluid-filled active vibration damping deviceTOKAI RUBBER IND LTD·Filed 2002·Granted Oct 26, 2004·17 cites·17 claims
- 2975US12461125B2Contact probeENPLAS CORP·Filed 2023·Granted Nov 4, 2025·0 cites·15 claims
- 3075US5311336AColor-converting an outline or other portion, with or without spreading of the portionCANON KK·Filed 1989·Granted May 10, 1994·47 cites·41 claims
- 3174US9551396B2Vibration damping deviceSUMITOMO RIKO CO LTD·Filed 2014·Granted Jan 24, 2017·5 cites·6 claims
- 3274US5691827AImage processing apparatus for converting a color image into a pattern image with a line having a width which is equal to or less than a predetermined width not being convertedCANON KK·Filed 1995·Granted Nov 25, 1997·40 cites·32 claims
- 3374US5485288AImage processing apparatus for converting a color image into a pattern image with a synthesized gradation image increasing in density closer to contour portions of the pattern imageCANON KK·Filed 1992·Granted Jan 16, 1996·31 cites·10 claims
- 3474US2024332688A1Holding apparatusHONDA MOTOR CO LTD·Filed 2024·Application pending·0 cites
- 3573US7409268B2Method for actuating active vibration insulatorsTOKAI RUBBER IND LTD·Filed 2005·Granted Aug 5, 2008·6 cites·6 claims
- 3673US5557430AImage processing apparatus generating patterns for colors based on a set relation between colors and patterns and synthesizing patterns with extracted monochromatic informationCANON KK·Filed 1995·Granted Sep 17, 1996·40 cites·30 claims
- 3773US5239383AImage processing apparatus capable of image editingCANON KK·Filed 1990·Granted Aug 24, 1993·27 cites·12 claims
- 3873US4878126AImgae processing apparatusCANON KK·Filed 1989·Granted Oct 31, 1989·26 cites·19 claims
- 3972US5726781AImage processing for converting color images into monochrome pattern imagesCANON KK·Filed 1995·Granted Mar 10, 1998·38 cites·22 claims
- 4071US10529574B2Process of forming electron device having gate electrodeSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Granted Jan 7, 2020·1 cites·11 claims
- 4171US7276823B2Active vibration damping deviceTOKAI RUBBER IND LTD·Filed 2005·Granted Oct 2, 2007·5 cites·8 claims
- 4271US7147946B2Fuel cell systemNISSAN MOTOR·Filed 2002·Granted Dec 12, 2006·14 cites·10 claims
- 4371US6659436B2Pneumatically operated active vibration damping device and vibration damping apparatus using the sameTOKAI RUBBER IND LTD·Filed 2002·Granted Dec 9, 2003·15 cites·11 claims
- 4470US9394964B2Fluid-filled vibration damping deviceTOKAI RUBBER IND LTD·Filed 2013·Granted Jul 19, 2016·3 cites·9 claims
- 4570US7747353B2Method of setting control data in an active vibration isolation control system and a control method thereofAISIN SEIKI·Filed 2005·Granted Jun 29, 2010·6 cites·8 claims
- 4669US7810798B2Electromagnetic actuator for active vibration damping deviceTOKAI RUBBER IND LTD·Filed 2007·Granted Oct 12, 2010·6 cites·6 claims
- 4769US7756619B2Active vibration insulatorTOKAI RUBBER IND LTD·Filed 2006·Granted Jul 13, 2010·5 cites·7 claims
- 4869US6994931B2Fuel cell power plant for mobile unitNISSAN MOTOR·Filed 2002·Granted Feb 7, 2006·24 cites·17 claims
- 4969US6269798B1Arrangement for clamping injectorsISUZU MOTORS LTD·Filed 1999·Granted Aug 7, 2001·24 cites·5 claims
- 5069US5119185AImage processing apparatus including a minimum value signal detector unitCANON KK·Filed 1990·Granted Jun 2, 1992·28 cites·32 claims
Showing the top 50 of 159 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Hiroyuki Ichikawa files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →