Assignee
SHOWA DENKO KK
US·2,001 granted patents·830 pending applications·25,281 citations·filing 1973–2024
Top patents by PatentIndex Score
2,831 records- 0198US7396598B2Light emitting material and organic light-emitting deviceSHOWA DENKO KK·Filed 2002·Granted Jul 8, 2008·884 cites·19 claims
- 0298US7250226B2Phosphorescent compound, a phosphorescent composition and an organic light-emitting deviceSHOWA DENKO KK·Filed 2002·Granted Jul 31, 2007·966 cites·27 claims
- 0396US11427779B2Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording mediumSHOWA DENKO KK·Filed 2018·Granted Aug 30, 2022·8 cites·11 claims
- 0496US11332686B2Fluorine-containing ether compound, lubricant for magnetic recording medium and magnetic recording mediumSHOWA DENKO KK·Filed 2017·Granted May 17, 2022·7 cites·15 claims
- 0596US4816286AProcess for synthesis of diamond by CVDSHOWA DENKO KK·Filed 1986·Granted Mar 28, 1989·136 cites·6 claims
- 0696US4634784AProcess for production of epichlorohydrinSHOWA DENKO KK·Filed 1985·Granted Jan 6, 1987·101 cites·2 claims
- 0795US11915799B2Polymer physical property prediction device, recording medium, and polymer physical property prediction methodSHOWA DENKO KK·Filed 2020·Granted Feb 27, 2024·3 cites·20 claims
- 0895US7763365B2Light emitting material and organic light-emitting deviceSHOWA DENKO KK·Filed 2008·Granted Jul 27, 2010·19 cites·8 claims
- 0995US7582156B2Highly active photocatalyst particles, method of production therefor, and use thereofSHOWA DENKO KK·Filed 2008·Granted Sep 1, 2009·25 cites·19 claims
- 1095US7329698B2Conductive curable resin composition and separator for fuel cellSHOWA DENKO KK·Filed 2002·Granted Feb 12, 2008·81 cites·21 claims
- 1195US6235270B1Cosmetics, silica-coated metal oxide powder and production method thereforSHOWA DENKO KK·Filed 1998·Granted May 22, 2001·121 cites·25 claims
- 1295US6096456AFilm for a separator of electrochemical apparatus, and production method and use thereofSHOWA DENKO KK·Filed 1997·Granted Aug 1, 2000·156 cites·27 claims
- 1395US5362592ADecolorizable tonerSHOWA DENKO KK·Filed 1992·Granted Nov 8, 1994·70 cites·13 claims
- 1495US4933106AHighly conductive polymer composition and process for producing the sameSHOWA DENKO KK·Filed 1987·Granted Jun 12, 1990·89 cites·16 claims
- 1594US9875765B2Base for magnetic recording mediumSHOWA DENKO KK·Filed 2016·Granted Jan 23, 2018·13 cites·4 claims
- 1694US8035125B2Light-emitting apparatus and method of manufacturing the sameSHOWA DENKO KK·Filed 2007·Granted Oct 11, 2011·30 cites·6 claims
- 1794US8003257B2Method for producing anode for lithium secondary battery and anode composition, and lithium secondary batterySHOWA DENKO KK·Filed 2006·Granted Aug 23, 2011·20 cites·5 claims
- 1894US7976965B2Magnetic recording medium and magnetic recording and reproducing deviceSHOWA DENKO KK·Filed 2009·Granted Jul 12, 2011·17 cites·6 claims
- 1994US7968361B2GaN based semiconductor light emitting device and lampSHOWA DENKO KK·Filed 2007·Granted Jun 28, 2011·30 cites·12 claims
- 2094US7942546B2Light guide member having light mixing protrusion, flat light source device, and display deviceSHOWA DENKO KK·Filed 2006·Granted May 17, 2011·49 cites·15 claims
- 2194US7875899B2Light-emitting diode package and lead group structure for light-emitting diode packageSHOWA DENKO KK·Filed 2008·Granted Jan 25, 2011·53 cites·6 claims
- 2294US7857192B2Friction stir welding tool and friction stir welding methodSHOWA DENKO KK·Filed 2007·Granted Dec 28, 2010·18 cites·13 claims
- 2394US6534044B1Cosmetic preparation, surface-hydrophobized silica-coated metal oxide particles, sol of silica-coated metal oxide, and processes for producing theseSHOWA DENKO KK·Filed 2000·Granted Mar 18, 2003·153 cites·30 claims
- 2494US6489026B1Carbon fiber, method for producing the same and electrode for cellSHOWA DENKO KK·Filed 2000·Granted Dec 3, 2002·49 cites·17 claims
- 2594US6406539B1Process for producing silicon carbide single crystal and production apparatus thereforSHOWA DENKO KK·Filed 2000·Granted Jun 18, 2002·64 cites·8 claims
- 2694US6299659B1Polishing material composition and polishing method for polishing LSI devicesSHOWA DENKO KK·Filed 2000·Granted Oct 9, 2001·66 cites·18 claims
- 2794US6190805B1Polymerizable compound, solid polymer electrolyte using the same and use thereofSHOWA DENKO KK·Filed 1998·Granted Feb 20, 2001·79 cites·34 claims
- 2894US6153894AGroup-III nitride semiconductor light-emitting deviceSHOWA DENKO KK·Filed 1999·Granted Nov 28, 2000·215 cites·8 claims
- 2994US6115235ACapacitorSHOWA DENKO KK·Filed 1998·Granted Sep 5, 2000·99 cites·7 claims
- 3094US4954141APolishing pad for semiconductor wafersSHOWA DENKO KK·Filed 1989·Granted Sep 4, 1990·194 cites·6 claims
- 3194US4380600AAqueous dispersion of water-soluble polymer compositionSHOWA DENKO KK·Filed 1981·Granted Apr 19, 1983·89 cites·17 claims
- 3294US4157728AProcess for direct chill casting of metalsSHOWA DENKO KK·Filed 1977·Granted Jun 12, 1979·98 cites·18 claims
- 3394US4080491AProcess of producing ring-opening polymerization productsSHOWA DENKO KK·Filed 1976·Granted Mar 21, 1978·67 cites·37 claims
- 3493US10803898B2Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording mediumSHOWA DENKO KK·Filed 2017·Granted Oct 13, 2020·7 cites·17 claims
- 3593US9276257B2Method for producing anode for lithium secondary battery and anode composition, and lithium secondary batterySHOWA DENKO KK·Filed 2014·Granted Mar 1, 2016·6 cites·1 claims
- 3693US7736769B2Magnetic recording medium, method of producing the same, and magnetic storage apparatusSHOWA DENKO KK·Filed 2006·Granted Jun 15, 2010·17 cites·20 claims
- 3793US7612363B2N-type group III nitride semiconductor stacked layer structureSHOWA DENKO KK·Filed 2005·Granted Nov 3, 2009·28 cites·24 claims
- 3893US7066243B2Evaporator, manufacturing method of the same, header for evaporator and refrigeration systemSHOWA DENKO KK·Filed 2002·Granted Jun 27, 2006·47 cites·56 claims
- 3993US5869723AIonic compound and olefin polymerization catalyst containing the sameSHOWA DENKO KK·Filed 1996·Granted Feb 9, 1999·121 cites·18 claims
- 4093US5597661ASolid polymer electrolyte, battery and solid-state electric double layer capacitor using the same as well as processes for the manufacture thereofSHOWA DENKO KK·Filed 1994·Granted Jan 28, 1997·110 cites·30 claims
- 4193US5329031AMetallocene and process for producing polyolefin using the sameSHOWA DENKO KK·Filed 1992·Granted Jul 12, 1994·69 cites·7 claims
- 4293US4994515AHeat-resistant resin compositionSHOWA DENKO KK·Filed 1989·Granted Feb 19, 1991·161 cites·18 claims
- 4393US4608297AMultilayer composite soft magnetic material comprising amorphous and insulating layers and a method for manufacturing the core of a magnetic head and a reactorSHOWA DENKO KK·Filed 1985·Granted Aug 26, 1986·56 cites·5 claims
- 4493US4160116AProcess for the production of alkylene glycolsSHOWA DENKO KK·Filed 1978·Granted Jul 3, 1979·47 cites·9 claims
- 4593US4130577AProcess for preparing α, α-dimethylbenzyl isocyanatesSHOWA DENKO KK·Filed 1977·Granted Dec 19, 1978·37 cites·9 claims
- 4692US9166110B2Light-emitting diode and method of manufacturing the sameSHOWA DENKO KK·Filed 2012·Granted Oct 20, 2015·19 cites·17 claims
- 4792US8372373B2Graphite material, carbonaceous material for battery electrodes, and batteriesSHOWA DENKO KK·Filed 2010·Granted Feb 12, 2013·10 cites·16 claims
- 4892US8037929B2EvaporatorSHOWA DENKO KK·Filed 2005·Granted Oct 18, 2011·21 cites·11 claims
- 4992US7976210B2Display device, light-emitting device, and solid-state light-emitting element substrateSHOWA DENKO KK·Filed 2007·Granted Jul 12, 2011·23 cites·22 claims
- 5092US7741653B2Gallium nitride-based compound semiconductor light-emitting deviceSHOWA DENKO KK·Filed 2006·Granted Jun 22, 2010·21 cites·23 claims
Showing the top 50 of 2,831 patent records by PatentIndex Score.
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