Inventor · disambiguated record
Takao Yamada
Also filed as: YAMADA TAKAO
56 granted patents·13 pending applications·2,626 citations·filing 1979–2023
99Inventor score
Files withPIONEER CORP9NICHIA CORP8NICHIA KAGAKU KOGYO KK7PIONEER ELECTRONIC CORP7TAKEDA CHEMICAL INDUSTRIES LTD4
Top patents by PatentIndex Score
69 records- 0199US5563422AGallium nitride-based III-V group compound semiconductor device and method of producing the sameNICHIA KAGAKU KOGYO KK·Filed 1994·Granted Oct 8, 1996·440 cites·49 claims
- 0298US5767581AGallium nitride-based III-V group compound semiconductorNICHIA KAGAKU KOGYO KK·Filed 1996·Granted Jun 16, 1998·171 cites·37 claims
- 0398US5652434AGallium nitride-based III-V group compound semiconductorNICHIA KAGAKU KOGYO KK·Filed 1996·Granted Jul 29, 1997·184 cites·12 claims
- 0497US6610995B2Gallium nitride-based III-V group compound semiconductorNICHIA CORP·Filed 2002·Granted Aug 26, 2003·94 cites·18 claims
- 0597US5877558AGallium nitride-based III-V group compound semiconductorNICHIA KAGAKU KOGYO KK·Filed 1997·Granted Mar 2, 1999·140 cites·5 claims
- 0697US4399035APolyvinylidene fluoride type resin hollow filament microfilter and process for producing the sameASAHI CHEMICAL IND·Filed 1980·Granted Aug 16, 1983·149 cites·4 claims
- 0794US6204512B1Gallium nitride-based III-V group compound semiconductor device and method of producing the sameNICHIA KAGAKU KOGYO KK·Filed 1999·Granted Mar 20, 2001·72 cites·13 claims
- 0894US6093965AGallium nitride-based III-V group compound semiconductorNICHIA KAGAKU KOGYO KK·Filed 1998·Granted Jul 25, 2000·76 cites·26 claims
- 0994US5076776AAnnular die for a lamination productMITSUBISHI PLASTICS IND·Filed 1990·Granted Dec 31, 1991·93 cites·2 claims
- 1093US7288797B2Semiconductor light emitting elementNICHIA CORP·Filed 2005·Granted Oct 30, 2007·65 cites·42 claims
- 1193US7183586B2Semiconductor element and manufacturing method for the sameNICHIA CORP·Filed 2004·Granted Feb 27, 2007·90 cites·20 claims
- 1290US6998690B2Gallium nitride based III-V group compound semiconductor device and method of producing the sameNICHIA CORP·Filed 2003·Granted Feb 14, 2006·30 cites·5 claims
- 1389US8236591B2Semiconductor light emitting element and method for manufacturing the sameICHIHARA TAKASHI·Filed 2008·Granted Aug 7, 2012·13 cites·28 claims
- 1489US6507041B2Gallium nitride-based III-V group compound semiconductorNICHIA KAGAKU KOGYO KK·Filed 2001·Granted Jan 14, 2003·29 cites·6 claims
- 1589US5537409ASynchronizing system for time-divided video and audio signalsPIONEER ELECTRONIC CORP·Filed 1994·Granted Jul 16, 1996·94 cites·10 claims
- 1689US4493789AElectroconductive paste and process for producing electroconductive metallized ceramics using the sameHITACHI CHEMICAL CO LTD·Filed 1983·Granted Jan 15, 1985·56 cites·25 claims
- 1788US4917211ASeismic isolatorNIPPON KOKAN KK·Filed 1988·Granted Apr 17, 1990·70 cites·18 claims
- 1888US4831610AMethod and apparatus for interactive control of a data recording medium playback apparatus using bar code accessPIONEER ELECTRONIC CORP·Filed 1987·Granted May 16, 1989·117 cites·6 claims
- 1987US7375383B2Gallium nitride based III-V group compound semiconductor device and method of producing the sameNICHIA CORP·Filed 2007·Granted May 20, 2008·7 cites·15 claims
- 2087US5294387AMethod of producing fiber-reinforced and particle-dispersion reinforced mullite composite materialAGENCY IND SCIENCE TECHN·Filed 1991·Granted Mar 15, 1994·40 cites·28 claims
- 2186US5060215AMethod and apparatus for leading-in focus servo by moving the objective lens toward the recording surface at two different speedsPIONEER ELECTRONIC CORP·Filed 1989·Granted Oct 22, 1991·38 cites·8 claims
- 2286US4229297AMethod of separating oil from oil-containing liquidASAHI CHEMICAL IND·Filed 1979·Granted Oct 21, 1980·45 cites·10 claims
- 2385US5331614AControlling playing operations of a plurality of magazine type disc players each having exclusive access to disc loaded thereinPIONEER ELECTRONIC CORP·Filed 1992·Granted Jul 19, 1994·48 cites·8 claims
- 2484US5304692ACatalyst composition for disproportionation of olefins and process for disproportionation of olefins using the sameMARUZEN PETROCHEM CO LTD·Filed 1992·Granted Apr 19, 1994·27 cites·11 claims
- 2581US9337405B2Light emitting device and method for manufacturing the sameNICHIA CORP·Filed 2013·Granted May 10, 2016·6 cites·27 claims
- 2680US7205220B2Gallium nitride based III-V group compound semiconductor device and method of producing the sameNICHIA CORP·Filed 2005·Granted Apr 17, 2007·4 cites·15 claims
- 2779US4553851ATimepiece operated by solar cellsMATSUSHITA ELECTRIC WORKS LTD·Filed 1983·Granted Nov 19, 1985·30 cites·9 claims
- 2878US6611187B2Magnetic core, coil assembly and power supply circuit using the sameNEC TOKIN CORP·Filed 2001·Granted Aug 26, 2003·17 cites·48 claims
- 2978US6165936AMethod for producing alumina-based porous supportsNORITAKE CO LTD·Filed 1998·Granted Dec 26, 2000·19 cites·4 claims
- 3077US6838259B2Process for producing kiss-1 peptideTAKEDA CHEMICAL INDUSTRIES LTD·Filed 2000·Granted Jan 4, 2005·4 cites·11 claims
- 3176US4653132AMethod of making plug-containing type internally threaded anchorKENSETSU FASTENER KABUSHIKI KA·Filed 1985·Granted Mar 31, 1987·44 cites·2 claims
- 3275US5256769AMutual separation of proteinsTAKEDA CHEMICAL INDUSTRIES LTD·Filed 1985·Granted Oct 26, 1993·29 cites·32 claims
- 3373US5685986AAdsorbent body including activated carbon and inorganic binder for bonding together activated carbon grains, and method of producing the adsorbent bodyNORITAKE CO LTD·Filed 1995·Granted Nov 11, 1997·42 cites·11 claims
- 3473US5572333ACompressed data recording method using integral logical block size and physical block size ratiosPIONEER ELECTRONIC CORP·Filed 1996·Granted Nov 5, 1996·45 cites·8 claims
- 3571US5236730ACandy and producing method thereofSAKUMA SEIKA KABUSHIKI KAISHA·Filed 1991·Granted Aug 17, 1993·39 cites·17 claims
- 3671US4746220AScrew type extruding or kneading machine and screw used thereinNORITAKE CO LTD·Filed 1986·Granted May 24, 1988·38 cites·14 claims
- 3770US6904003B2Information reproducing apparatus having cue point setting functionPIONEER CORP·Filed 2002·Granted Jun 7, 2005·8 cites·14 claims
- 3864US12147191B2Toner and two-component developerSHARP KK·Filed 2021·Granted Nov 19, 2024·0 cites·8 claims
- 3962US8878214B2Semiconductor light emitting deviceUBAHARA NOBUHIRO·Filed 2011·Granted Nov 4, 2014·3 cites·12 claims
- 4060US7231129B2Information reproduction apparatus and information reproduction methodPIONEER CORP·Filed 2001·Granted Jun 12, 2007·5 cites·18 claims
- 4159US7751684B2Signal processorPIONEER CORP·Filed 2004·Granted Jul 6, 2010·4 cites·13 claims
- 4259US6083539ABuckwheat starch syrup, method for preparing the same, and foods containing the sameSAKUMA SEIKA KK·Filed 1998·Granted Jul 4, 2000·20 cites·20 claims
- 4359US5077243AFiber-reinforced and particle-dispersion reinforced mullite composite material and method of producing the sameAGENCY IND SCIENCE TECHN·Filed 1991·Granted Dec 31, 1991·12 cites·23 claims
- 4457US6742062B2Information reproduction apparatus and information reproduction methodPIONEER CORP·Filed 2001·Granted May 25, 2004·4 cites·18 claims
- 4557US5608714AStructure for supporting disc stockers in a disc changer with a manually operable release leverPIONEER ELECTRONIC CORP·Filed 1994·Granted Mar 4, 1997·12 cites·2 claims
- 4657US4946294ABearing apparatusNIPPON KOKAN KK·Filed 1989·Granted Aug 7, 1990·13 cites·6 claims
- 4757US4798886AMutual separation of proteinsTAKEDA CHEMICAL INDUSTRIES LTD·Filed 1987·Granted Jan 17, 1989·16 cites·17 claims
- 4855US7042830B2Phase-change optical information recording medium, and optical information recording and reproducing apparatus and method for the sameRICOH KK·Filed 2002·Granted May 9, 2006·2 cites·21 claims
- 4953US2024152066A1Printing toner containing sublimable dye and two component developer including sameSHARP KK·Filed 2023·Application pending·0 cites
- 5051US7742686B2Signal processorPIONEER CORP·Filed 2004·Granted Jun 22, 2010·2 cites·13 claims
Showing the top 50 of 69 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →