Inventor · disambiguated record
Kiyoharu Hasegawa
Also filed as: HASEGAWA KIYOHARU
36 granted patents·310 citations·filing 1978–1996
97Inventor score
Files withMITSUI TOATSU CHEMICALS36
Top patents by PatentIndex Score
36 records- 0191US4574110AProcess for producing microcapsules and microcapsule slurryMITSUI TOATSU CHEMICALS·Filed 1984·Granted Mar 4, 1986·40 cites·7 claims
- 0290US5281570AThermochromic materialsMITSUI TOATSU CHEMICALS·Filed 1992·Granted Jan 25, 1994·49 cites·12 claims
- 0379US4302396AChlorinated 4-methylphthalic anhydridesMITSUI TOATSU CHEMICALS·Filed 1978·Granted Nov 24, 1981·12 cites·1 claims
- 0478US4931420ATemperature history indicator and its manufacturing methodMITSUI TOATSU CHEMICALS·Filed 1987·Granted Jun 5, 1990·37 cites·17 claims
- 0576US4760108AMicrocapsule-containing water-base coating formulation and copying and/or recording material making use of said coating formulationMITSUI TOATSU CHEMICALS·Filed 1985·Granted Jul 26, 1988·21 cites·5 claims
- 0675US4398753APressure sensitive recording unitMITSUI TOATSU CHEMICALS·Filed 1981·Granted Aug 16, 1983·16 cites·12 claims
- 0766US5647896AColor-developing agents and color-developing sheetsMITSUI TOATSU CHEMICALS·Filed 1995·Granted Jul 15, 1997·17 cites·19 claims
- 0866US5270281AHeat-sensitive recording materials and phenol compoundsMITSUI TOATSU CHEMICALS·Filed 1992·Granted Dec 14, 1993·8 cites·4 claims
- 0958US5391806AHeat-sensitive recording materials and phenol compoundsMITSUI TOATSU CHEMICALS·Filed 1993·Granted Feb 21, 1995·5 cites·20 claims
- 1055US5447901AColor-developing compositions and their useMITSUI TOATSU CHEMICALS·Filed 1994·Granted Sep 5, 1995·6 cites·7 claims
- 1155US5300473ARecording material comprising crystal of fluoran compoundMITSUI TOATSU CHEMICALS·Filed 1993·Granted Apr 5, 1994·6 cites·4 claims
- 1254US5525686APolyvalent metal salt of salicyclic acid resin and process for preparing itMITSUI TOATSU CHEMICALS·Filed 1994·Granted Jun 11, 1996·9 cites·6 claims
- 1354US5118756AReaction system modifier suitable for use in the productions of microcapsulesMITSUI TOATSU CHEMICALS·Filed 1991·Granted Jun 2, 1992·14 cites·3 claims
- 1454US4997874AAqueous suspension and preparation method thereofMITSUI TOATSU CHEMICALS·Filed 1988·Granted Mar 5, 1991·7 cites·11 claims
- 1553US4480002ADyestuff-containing microscopic capsule suspension for record materialsMITSUI TOATSU CHEMICALS·Filed 1981·Granted Oct 30, 1984·7 cites·3 claims
- 1651US5306688ASalicylic acid derivatives, the process for preparing the same and the heat-sensitive recording materials comprising thereofMITSUI TOATSU CHEMICALS·Filed 1992·Granted Apr 26, 1994·4 cites·12 claims
- 1751US5208209AFluoran compounds, process for preparation thereof and recording materials comprising said compoundMITSUI TOATSU CHEMICALS·Filed 1991·Granted May 4, 1993·5 cites·4 claims
- 1851US4632987AProcess for the preparation of triarylmethane compoundsMITSUI TOATSU CHEMICALS·Filed 1983·Granted Dec 30, 1986·4 cites·6 claims
- 1950US5300661AProcess for preparation of a recording material comprising a novel crystal of a fluoran compoundMITSUI TOATSU CHEMICALS·Filed 1993·Granted Apr 5, 1994·4 cites·3 claims
- 2049US5185453ACrystal of fluoran compoundMITSUI TOATSU CHEMICALS·Filed 1991·Granted Feb 9, 1993·2 cites·1 claims
- 2149US4735744ANovel benzoquinone derivatives and production process thereof as well as use as color-developers suitable for recording materialsMITSUI TOATSU CHEMICALS·Filed 1985·Granted Apr 5, 1988·5 cites·5 claims
- 2248US5376615AColor-developing compositions and their useMITSUI TOATSU CHEMICALS·Filed 1992·Granted Dec 27, 1994·4 cites·9 claims
- 2347US5302571ACrystals of fluoran compound, crystalline solvates thereof, process for their preparation and recording material comprising said crystal or said solvateMITSUI TOATSU CHEMICALS·Filed 1993·Granted Apr 12, 1994·2 cites·11 claims
- 2446US5559247ACarboxylate and heat-sensitive recording material using sameMITSUI TOATSU CHEMICALS·Filed 1995·Granted Sep 24, 1996·3 cites·3 claims
- 2543US5283222ARecording material comprising novel crystalline fluoran and process for prepartion of the said crystalline fluoranMITSUI TOATSU CHEMICALS·Filed 1992·Granted Feb 1, 1994·2 cites·7 claims
- 2642US5691272ACarboxylate and heat-sensitive recording material using sameMITSUI TOATSU CHEMICALS·Filed 1996·Granted Nov 25, 1997·5 cites·16 claims
- 2742US5324704AFluoran compounds, crystalline toluene adducts thereof, recording material comprising same and process for their preparationMITSUI TOATSU CHEMICALS·Filed 1993·Granted Jun 28, 1994·2 cites·13 claims
- 2841US5220038AFluoran compounds, crystalline toluene adducts thereof, recording material comprising same and process for their preparationMITSUI TOATSU CHEMICALS·Filed 1990·Granted Jun 15, 1993·1 cites·20 claims
- 2940US5194632AFluoran compound, useful in heat sensitive recording materialsMITSUI TOATSU CHEMICALS·Filed 1990·Granted Mar 16, 1993·2 cites·1 claims
- 3040US5087706AFluoran compounds, process for preparation thereof and recording materials comprising said compoundMITSUI TOATSU CHEMICALS·Filed 1990·Granted Feb 11, 1992·2 cites·4 claims
- 3138US4384871ADyestuff-containing microscopic capsule dispersion for record materialsMITSUI TOATSU CHEMICALS·Filed 1982·Granted May 24, 1983·3 cites·10 claims
- 3235US5260403AColor-developing composition, aqueous suspension of the composition, and color-developing sheet produced using the suspension and suitable for use in pressure-sensitive copying paperMITSUI TOATSU CHEMICALS·Filed 1992·Granted Nov 9, 1993·4 cites·15 claims
- 3335US4561000AHeat-sensitive recording unitMITSUI TOATSU CHEMICALS·Filed 1983·Granted Dec 24, 1985·2 cites·10 claims
- 3434US5245049ACrystals of fluoran compound, crystalline solvates thereof and process for their preparationMITSUI TOATSU CHEMICALS·Filed 1991·Granted Sep 14, 1993·0 cites·33 claims
- 3532US5231069AFluoran compound, heat sensitive recording materials comprising fluoran compoundMITSUI TOATSU CHEMICALS·Filed 1992·Granted Jul 27, 1993·0 cites·4 claims
- 3632US5210221ACrystal of fluoran compound and preparation process of the crystalMITSUI TOATSU CHEMICALS·Filed 1991·Granted May 11, 1993·0 cites·13 claims
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