Inventor · disambiguated record
Yukio Tokunaga
Also filed as: TOKUNAGA YUKIO
40 granted patents·7 pending applications·623 citations·filing 1975–2019
98Inventor score
Files withMITSUBISHI PAPER MILLS LTD13SUMITOMO DUREZ CO11NIPPON TELEGRAPH & TELEPHONE5KUMIAI CHEMICAL INDUSTRY CO4OKI ELECTRIC IND CO LTD2
Top patents by PatentIndex Score
47 records- 0195US4985432A5H-1,3,4-thiadiazolo(3,2-A)pyrimidin-5-one derivatives and agricultural-horticultural fungicide composition containing the sameKUMIAI CHEMICAL INDUSTRY CO·Filed 1989·Granted Jan 15, 1991·70 cites·6 claims
- 0295US4971971A5H-1,3,4-thiadiazolo(3,2-A)pyrimidin-5-one derivatives and functional compositions containing the sameKUMIAI CHEMICAL INDUSTRY CO·Filed 1989·Granted Nov 20, 1990·66 cites·13 claims
- 0393US6773771B1Ink-jet recording sheetMITSUBISHI PAPER MILLS LTD·Filed 2000·Granted Aug 10, 2004·37 cites·11 claims
- 0489US4315643AHeat-sensitive transfer elementNIPPON TELEGRAPH & TELEPHONE·Filed 1980·Granted Feb 16, 1982·52 cites·7 claims
- 0587US6403162B1Silica dispersion, method for preparing the same and method for making ink-jet recording material using the sameMITSUBISHI PAPER MILLS LTD·Filed 2000·Granted Jun 11, 2002·26 cites·9 claims
- 0687US4318597AOptical print head for optical printing devicesOKI ELECTRIC IND CO LTD·Filed 1980·Granted Mar 9, 1982·48 cites·7 claims
- 0786US4463034AHeat-sensitive magnetic transfer elementNIPPON TELEGRAPH & TELEPHONE·Filed 1982·Granted Jul 31, 1984·56 cites·6 claims
- 0884US6610389B2Ink-jet recording material, and recording method of ink-jet recording and recorded material using the sameMITSUBISHI PAPER MILLS LTD·Filed 2002·Granted Aug 26, 2003·19 cites·6 claims
- 0978US6899930B2Recording material for ink-jetMITSUBISHI PAPER MILLS LTD·Filed 2001·Granted May 31, 2005·17 cites·17 claims
- 1077US6607269B2Ink-jet recording materialMITSUBISHI PAPER MILLS LTD·Filed 2001·Granted Aug 19, 2003·11 cites·45 claims
- 1177US4376282AOptical print head with graded index fiber arrays for optical printing devicesOKI ELECTRIC IND CO LTD·Filed 1980·Granted Mar 8, 1983·23 cites·7 claims
- 1275US6589635B2Ink-jet recording material and ink-jet recording methodMITSUBISHI PAPER MILLS LTD·Filed 2001·Granted Jul 8, 2003·12 cites·8 claims
- 1374US10624335B2Tool for cryopreservation of cell or tissue and cryopreservation methodMITSUBISHI PAPER MILLS LTD·Filed 2015·Granted Apr 21, 2020·1 cites·6 claims
- 1473US7615266B2Ink jet recording materialSEIKO EPSON CORP·Filed 2006·Granted Nov 10, 2009·3 cites·5 claims
- 1570US9360747B2Transmission type screenMITSUBISHI PAPER MILLS LTD·Filed 2013·Granted Jun 7, 2016·2 cites·13 claims
- 1668US4581283AHeat-sensitive magnetic transfer elementNIPPON TELEGRAPH & TELEPHONE·Filed 1984·Granted Apr 8, 1986·17 cites·5 claims
- 1768US4468486ACoated sand and method for producingSUMITOMO DUREZ CO·Filed 1982·Granted Aug 28, 1984·19 cites·40 claims
- 1867US6919110B2Packaged product for ink-jet recording material, and recording method and recorded material using ink-jet recording materialSEIKO EPSON CORP·Filed 2002·Granted Jul 19, 2005·7 cites·23 claims
- 1967US6579598B2Ink-jet recording materialMITSUBISHI PAPER MILLS LTD·Filed 2001·Granted Jun 17, 2003·13 cites·10 claims
- 2065US4698370AProduction of phenolic resin composite foamSUMITOMO DUREZ CO·Filed 1986·Granted Oct 6, 1987·24 cites·8 claims
- 2162US2008299318A1Ink-jet recording material and method for preparing the sameSAKAGUCHI HIROSHI·Filed 2008·Application pending·0 cites
- 2261US4452927AResin coated sand for shell molding processSUMITOMO DUREZ CO·Filed 1983·Granted Jun 5, 1984·15 cites·9 claims
- 2360US6613416B1Ink-jet recording materialMITSUBISHI PAPER MILLS LTD·Filed 2000·Granted Sep 2, 2003·8 cites·15 claims
- 2459US11510408B2Cryopreservation jig for cryopreserving cells or tissuesMITSUBISHI PAPER MILLS LTD·Filed 2018·Granted Nov 29, 2022·0 cites·4 claims
- 2556US4694028AManufacturing method for phenol resin foamSUMITOMO DUREZ CO·Filed 1986·Granted Sep 15, 1987·14 cites·10 claims
- 2654US4866064A5H-1,3,4-thiadiazolo(3,2-A)pyrimidin-5-one derivatives and fungicidal compositions containing the sameKUMIAI CHEMICAL INDUSTRY CO·Filed 1987·Granted Sep 12, 1989·3 cites·10 claims
- 2754US2006194005A1Ink-jet recording materialMIYACHI NORIMASA·Filed 2006·Application pending·0 cites
- 2852US2004265514A1Ink-jet recording material and method for preparing the sameFiled 2004·Application pending·0 cites
- 2951US7326440B2Process for preparing an ink-jet recording materialMITSUBISHI PAPER MILLS LTD·Filed 2003·Granted Feb 5, 2008·0 cites·9 claims
- 3051US5034370AColor developer for pressure-sensitive recording paperSUMITOMO DUREZ CO·Filed 1989·Granted Jul 23, 1991·5 cites·14 claims
- 3150US4460717AResin coated sand composition and method of producing sameSUMITOMO DUREZ CO·Filed 1983·Granted Jul 17, 1984·10 cites·15 claims
- 3249US4742063AAgricultural-horticultural fungicide employing 5H-1,3,4-thiadiazolo[3,2-a]pyKUMIAI CHEMICAL INDUSTRY CO·Filed 1987·Granted May 3, 1988·4 cites·19 claims
- 3348US4459376AResin-coated sand for shell-molds and method for producing sameSUMITOMO DUREZ CO·Filed 1982·Granted Jul 10, 1984·9 cites·20 claims
- 3448US2003054145A1Sheet-state ink-jet recording materialFiled 2002·Application pending·0 cites
- 3547US4231963AProcess for producing aminophenol etherIHARA CHEMICAL IND CO·Filed 1979·Granted Nov 4, 1980·2 cites·2 claims
- 3645US2003224129A1Ink-jet recording materialFiled 2003·Application pending·0 cites
- 3745US2001039536A1Cost data management system, method of managing cost data, and recording mediumFiled 2001·Application pending·0 cites
- 3842US5404423AMethod and apparatus for indetification, forecast, and control of a non-linear flow on a physical system network using a neural networkNIPPON TELEGRAPH & TELEPHONE·Filed 1993·Granted Apr 4, 1995·10 cites·20 claims
- 3942US4460716ACoated sand composition and method for producing sameSUMITOMO DUREZ CO·Filed 1983·Granted Jul 17, 1984·4 cites·20 claims
- 4042US4052211AImage forming materialFUJI PHOTO FILM CO LTD·Filed 1975·Granted Oct 4, 1977·7 cites·16 claims
- 4137US7541410B2Thermosetting resin composition, thermosetting resin molding compound and cured product thereofSUMITOMO BAKELITE CO·Filed 2005·Granted Jun 2, 2009·0 cites·14 claims
- 4236US2021219433A1Pattern-transferred object manufacturing methodMITSUBISHI PAPER MILLS LTD·Filed 2019·Application pending·0 cites
- 4335US4255043AElectrostatic recording method and apparatus by doubly controlling ion flowNIPPON TELEGRAPH & TELEPHONE·Filed 1979·Granted Mar 10, 1981·3 cites·12 claims
- 4432US4418161AResin coated sand and method for producing sameSUMITOMO DUREZ CO·Filed 1982·Granted Nov 29, 1983·2 cites·17 claims
- 4531US4920185AColor developer for pressure-sensitive recording paper and production thereof using a phenol-xylene-formaldehyde resinSUMITOMO DUREZ CO·Filed 1989·Granted Apr 24, 1990·0 cites·9 claims
- 4631US4920186AColor developer for pressure sensitive recording paper and production thereof using phenol-mesitylene-formaldehyde resinSUMITOMO DUREZ CO·Filed 1989·Granted Apr 24, 1990·0 cites·7 claims
- 4728US4795589ASilicate phosphorKASEI OPTONIX·Filed 1987·Granted Jan 3, 1989·4 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →