Inventor · disambiguated record
Kunio Hayakawa
Also filed as: HAYAKAWA KUNIO
39 granted patents·2 pending applications·1,173 citations·filing 1987–2016
98Inventor score
Top patents by PatentIndex Score
41 records- 0198US6400492B1Electrophoretic display liquid, and electrophoretic display medium, method and device using the liquidRICOH KK·Filed 2000·Granted Jun 4, 2002·200 cites·37 claims
- 0297US6514328B1Marking ink composition and display medium using the sameRICOH KK·Filed 2000·Granted Feb 4, 2003·111 cites·24 claims
- 0395US5945517AChemical-sensitization photoresist compositionTOKYO OHKA KOGYO CO LTD·Filed 1998·Granted Aug 31, 1999·305 cites·9 claims
- 0494US7338919B2Reversible thermosensitive recording medium and device, and image processing method and apparatus using the reversible thermosensitive recording mediumRICOH KK·Filed 2005·Granted Mar 4, 2008·20 cites·21 claims
- 0594US6816146B2Electrophoretic display liquid and electrophoretic display medium and device using the liquid having predetermined different volume medium particle diametersRICOH KK·Filed 2000·Granted Nov 9, 2004·58 cites·41 claims
- 0693US7422996B2Reversible thermosensitive recording medium, reversible thermosensitive recording label, reversible thermosensitive recording member, image-processing apparatus and image-processing methodRICOH KK·Filed 2007·Granted Sep 9, 2008·14 cites·13 claims
- 0793US6693621B1Electrophoretic display method, display medium, liquid and particle for display medium, display apparatus, and reversible display materialRICOH KK·Filed 2000·Granted Feb 17, 2004·56 cites·43 claims
- 0889US7585813B2Reversible thermosensitive recording medium, label and member, and image processing apparatus and methodRICOH KK·Filed 2007·Granted Sep 8, 2009·7 cites·23 claims
- 0989US5722029AImage forming apparatusRICOH KK·Filed 1996·Granted Feb 24, 1998·68 cites·2 claims
- 1088US7238642B2Reversible thermosensitive recording medium, label and member, and, image processing apparatus and methodRICOH KK·Filed 2004·Granted Jul 3, 2007·18 cites·11 claims
- 1188US4985345ARecording materialRICOH KK·Filed 1990·Granted Jan 15, 1991·63 cites·22 claims
- 1285US7993732B2Heat-sensitive pressure-sensitive adhesive and heat-sensitive adhesive materialRICOH CO LTD·Filed 2007·Granted Aug 9, 2011·6 cites·25 claims
- 1385US7456132B2Phenol compound, reversible thermosensitive recording medium, reversible thermosensitive recording label, reversible thermosensitive recording member, image-processing apparatus and imaging-processing methodRICOH KK·Filed 2005·Granted Nov 25, 2008·6 cites·21 claims
- 1485US6846619B2Dye dispersion liquid and thermosensitive recording material using the sameRICOH KK·Filed 2002·Granted Jan 25, 2005·20 cites·27 claims
- 1584US5447900AThermosensitive recording materialRICOH KK·Filed 1994·Granted Sep 5, 1995·32 cites·8 claims
- 1684US5024699ALeuco dyes and recording materials using the sameRICOH KK·Filed 1990·Granted Jun 18, 1991·18 cites·8 claims
- 1783US5306687AThermosensitive recording materialRICOH KK·Filed 1993·Granted Apr 26, 1994·29 cites·5 claims
- 1882US6180560B1Thermosensitive recording material and color developer compound thereforRICOH KK·Filed 1998·Granted Jan 30, 2001·19 cites·23 claims
- 1981US5446011AThermosensitive recording materialRICOH KK·Filed 1994·Granted Aug 29, 1995·25 cites·14 claims
- 2080US6395680B1Composition of aromatic carboxylic acid compounds and thermosensitive recording material using the sameRICOH KK·Filed 2000·Granted May 28, 2002·15 cites·8 claims
- 2176US6710015B2Thermosensitive recording materialRICOH KK·Filed 2002·Granted Mar 23, 2004·10 cites·16 claims
- 2273US7989529B2Thermosensitive adhesive composition, method of manufacturing the same and thermosensitive adhesive materialRICOH CO LTD·Filed 2006·Granted Aug 2, 2011·1 cites·19 claims
- 2367US5489501ARecording compositionRICOH KK·Filed 1994·Granted Feb 6, 1996·28 cites·14 claims
- 2464US9828938B2Piston for internal combustion enginesSUZUKI MOTOR CORP·Filed 2016·Granted Nov 28, 2017·1 cites·5 claims
- 2564US8088712B2Reversible thermosensitive recording medium, reversible thermosensitive recording label, member, and image processing methodSHIMBO HITOSHI·Filed 2008·Granted Jan 3, 2012·1 cites·6 claims
- 2662US6747170B2Thermosensitive recording material and color developer compound thereforRICOH KK·Filed 2002·Granted Jun 8, 2004·2 cites·1 claims
- 2758US7432223B2Reversible thermosensitive recording medium, information storage material, reversible thermosensitive recording label, image processing method and image processing deviceRICOH KK·Filed 2004·Granted Oct 7, 2008·2 cites·24 claims
- 2856US5126486APhenolic compoundsRICOH KK·Filed 1990·Granted Jun 30, 1992·4 cites·3 claims
- 2953US7071145B2Thermosensitive recording material, and synthesis method of oligomer composition for the recording materialRICOH KK·Filed 2004·Granted Jul 4, 2006·1 cites·12 claims
- 3053US2004242414A1Thermosensitive recording material, and synthesis method of oligomer compositon for the recording materialFiled 2004·Application pending·0 cites
- 3152US4940691AColoring phthalide compounds and recording materials using the compounds as coloring componentRICOH KK·Filed 1989·Granted Jul 10, 1990·4 cites·3 claims
- 3250US4978651APhenolic compounds and recording material comprising the sameRICOH KK·Filed 1989·Granted Dec 18, 1990·4 cites·3 claims
- 3347US7071142B2Thermal recording materialRICOH KK·Filed 2003·Granted Jul 4, 2006·0 cites·10 claims
- 3446US6878671B2Thermosensitive recording material, and synthesis method of oligomer composition for the recording materialRICOH KK·Filed 2002·Granted Apr 12, 2005·0 cites·7 claims
- 3540US4925828ALeuco dyes and recording materials using the sameRICOH KK·Filed 1988·Granted May 15, 1990·6 cites·6 claims
- 3637US5308710AAl-Zn-Si base alloy coated productDAIDO STEEL SHEET CORP·Filed 1992·Granted May 3, 1994·5 cites·10 claims
- 3736US5515171ARemote-controlled copying apparatus having facsimile interface unitRICOH KK·Filed 1993·Granted May 7, 1996·6 cites·8 claims
- 3834US4981970AColoring phthalide compoundsRICOH KK·Filed 1989·Granted Jan 1, 1991·3 cites·5 claims
- 3933US2016136722A1Method for surface-treating forging memberMACOHO CO LTD·Filed 2015·Application pending·0 cites
- 4032US5478600AProcess for coating ferrous product with Al-Zn-Si alloyDAIDO STEEL SHEET CORP·Filed 1995·Granted Dec 26, 1995·3 cites·13 claims
- 4132US4880762AColoring phthalide compounds, method of producing the compounds and recording materials using any of the compounds as coloring componentRICOH KK·Filed 1987·Granted Nov 14, 1989·2 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →