Inventor · disambiguated record
Hisayoshi Fujikawa
Also filed as: FUJIKAWA HISAYOSHI
23 granted patents·1 pending application·475 citations·filing 1992–2014
96Inventor score
Top patents by PatentIndex Score
24 records- 0190US6406801B1Optical resonator type organic electroluminescent elementTOYODA CHUO KENKYUSHO KK·Filed 1999·Granted Jun 18, 2002·69 cites·8 claims
- 0289US5404075ATFEL element with tantalum oxide and tungsten oxide insulating layerTOYODA CHUO KENKYUSHO KK·Filed 1992·Granted Apr 4, 1995·69 cites·8 claims
- 0386US8400706B2Acousto-optic scannerIIZUKA HIDEO·Filed 2011·Granted Mar 19, 2013·5 cites·7 claims
- 0482US6355773B1Functional polymer and organic electroluminescence element, optical memory, and hole transport element using the sameTOYODA CHUO KENKYUSHO KK·Filed 2000·Granted Mar 12, 2002·19 cites·13 claims
- 0579US9136406B2Solar cell assembly with diffraction gratingsIIZUKA HIDEO·Filed 2010·Granted Sep 15, 2015·3 cites·13 claims
- 0679US5589733AElectroluminescent element including a dielectric film of tantalum oxide and an oxide of either indium, tin, or zincTOYODA CHUO KENKYUSHO KK·Filed 1995·Granted Dec 31, 1996·47 cites·16 claims
- 0777US8976450B2Optical light switch having two internally located diffraction gratings separated by liquid mediumIIZUKA HIDEO·Filed 2011·Granted Mar 10, 2015·4 cites·24 claims
- 0875US5225286ADielectric filmTOYODA CHUO KENKYUSHO KK·Filed 1992·Granted Jul 6, 1993·37 cites·8 claims
- 0974US6036823ADielectric thin film and thin-film EL device using sameDENSO CORP·Filed 1998·Granted Mar 14, 2000·29 cites·8 claims
- 1073US7279239B2Laminating product including adhesion layer and laminate product including protective filmTOYOTA CHUO KENKYUSHO KK·Filed 2003·Granted Oct 9, 2007·20 cites·7 claims
- 1168US6573380B24-cyanocoumarin derivatives and uses thereofHAYASHIBARA BIOCHEM LAB·Filed 2001·Granted Jun 3, 2003·9 cites·16 claims
- 1267US5306950AElectrode assembly for a semiconductor deviceTOYODA CHUO KENKYUSHO KK·Filed 1992·Granted Apr 26, 1994·36 cites·6 claims
- 1364US8026578B2Barrier film and method of producing barrier filmTOYOTA CHUO KENKYUSHO KK·Filed 2008·Granted Sep 27, 2011·2 cites·6 claims
- 1463US5635764ASurface treated structure for solder jointNIPPON DENSO CO·Filed 1993·Granted Jun 3, 1997·32 cites·19 claims
- 1562US5789860ADielectric thin film composition and thin-film EL device using sameNIPPON DENSO CO·Filed 1996·Granted Aug 4, 1998·17 cites·8 claims
- 1661US6416887B1Organic electroluminescent elementTOYODA CHUO KENKYUSHO KK·Filed 1999·Granted Jul 9, 2002·66 cites·8 claims
- 1754US7521567B2Amine compound and uses thereofHAYASHIBARA BIOCHEM LAB·Filed 2004·Granted Apr 21, 2009·4 cites·2 claims
- 1852US7419727B2Organic electroluminescent deviceHAYASHIBARA BIOCHEM LAB·Filed 2004·Granted Sep 2, 2008·5 cites·4 claims
- 1949US7375225B24-cyanocoumarin derivatives and uses thereofHAYASHIBARA BIOCHEM LAB·Filed 2003·Granted May 20, 2008·0 cites·1 claims
- 2047US10424678B2Solar cell with double groove diffraction gratingIIZUKA HIDEO·Filed 2011·Granted Sep 24, 2019·0 cites·23 claims
- 2145US2015090862A1Lens and manufacturing method for the sameDENSO CORP·Filed 2014·Application pending·0 cites
- 2238US7514158B2Coumarin compoundHAYASHIBARA BIOCHEM LAB·Filed 2002·Granted Apr 7, 2009·0 cites·7 claims
- 2335US7252892B2Organic electroluminescence deviceTOYOTA JIDOSHOKKI KK·Filed 2002·Granted Aug 7, 2007·0 cites·7 claims
- 2434US7338720B2Organic electroluminescent elementTOYOTA JIDOSHOKKI KK·Filed 2002·Granted Mar 4, 2008·2 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →