Inventor · disambiguated record
Kazumasa Takagi
Also filed as: TAKAGI KAZUMASA
38 granted patents·2 pending applications·1,061 citations·filing 1974–2016
98Inventor score
Top patents by PatentIndex Score
40 records- 0195US4833020AMagnetic recording mediumHITACHI LTD·Filed 1988·Granted May 23, 1989·77 cites·30 claims
- 0294US4691983AOptical waveguide and method for making the sameHITACHI LTD·Filed 1984·Granted Sep 8, 1987·96 cites·12 claims
- 0393US6958608B2Nuclear magnetic resonance equipmentHITACHI LTD·Filed 2004·Granted Oct 25, 2005·69 cites·16 claims
- 0493US5147732ALongitudinal magnetic recording media and magnetic memory unitsHITACHI LTD·Filed 1989·Granted Sep 15, 1992·96 cites·34 claims
- 0591US5143794AMagnetic recording media for longitudinal recording, process for producing the same and magnetic memory apparatusHITACHI LTD·Filed 1989·Granted Sep 1, 1992·49 cites·8 claims
- 0689US5096882AProcess for controlling oxygen content of superconductive oxide, superconductive device and process for production thereofHITACHI LTD·Filed 1988·Granted Mar 17, 1992·75 cites·43 claims
- 0789US4647781AGamma ray detectorHITACHI CHEMICAL CO LTD·Filed 1985·Granted Mar 3, 1987·38 cites·8 claims
- 0887US6486756B2Superconductor signal amplifierHITACHI LTD·Filed 2001·Granted Nov 26, 2002·40 cites·18 claims
- 0982US6627253B2Magnetic recording media for longitudinal recording, process for producing the same and magnetic memory apparatusHITACHI LTD·Filed 2001·Granted Sep 30, 2003·16 cites·6 claims
- 1079US4365155AScintillator with ZnWO4 single crystalHITACHI LTD·Filed 1980·Granted Dec 21, 1982·33 cites·14 claims
- 1177US6608518B2Superconducting single flux quantum circuitHITACHI LTD·Filed 2002·Granted Aug 19, 2003·30 cites·11 claims
- 1277US5665478AMagnetic recording media for longitudinal recordingHITACHI LTD·Filed 1994·Granted Sep 9, 1997·32 cites·44 claims
- 1376US4883711AMagnetic recording mediumHITACHI LTD·Filed 1987·Granted Nov 28, 1989·30 cites·9 claims
- 1476US4803392APiezoelectric transducerHITACHI LTD·Filed 1987·Granted Feb 7, 1989·32 cites·18 claims
- 1575US4631402AOptical electric-field measuring apparatusHITACHI LTD·Filed 1984·Granted Dec 23, 1986·34 cites·15 claims
- 1674US6310488B1Superconductive single flux quantum logic circuitHITACHI LTD·Filed 1999·Granted Oct 30, 2001·29 cites·3 claims
- 1773US8955283B2Mounting baseTAKAGI KAZUMASA·Filed 2011·Granted Feb 17, 2015·10 cites·12 claims
- 1872US4950642AMethod for fabricating superconducting oxide thin films by activated reactive evaporationHITACHI LTD·Filed 1988·Granted Aug 21, 1990·24 cites·4 claims
- 1970US6335103B1Magnetic recording media for longitudinal recordingHITACHI LTD·Filed 1997·Granted Jan 1, 2002·21 cites·26 claims
- 2069US3951729AMethod for producing single crystalsHITACHI LTD·Filed 1974·Granted Apr 20, 1976·23 cites·16 claims
- 2168US5077266AMethod of forming weak-link josephson junction, and superconducting device employing the junctionHITACHI LTD·Filed 1989·Granted Dec 31, 1991·25 cites·16 claims
- 2262US4744231AClosure lock systemNISSAN MOTOR·Filed 1983·Granted May 17, 1988·16 cites·15 claims
- 2362US4346364AVoice warning system for an automotive vehicle with ready-to-drive sensorNISSAN MOTOR·Filed 1980·Granted Aug 24, 1982·16 cites·14 claims
- 2461US5316585AMethod for fabricating superconducting materials and superconductive thin filmsHITACHI LTD·Filed 1990·Granted May 31, 1994·18 cites·15 claims
- 2561US4842917AMagnetic recording medium and process for producing the sameHITACHI LTD·Filed 1987·Granted Jun 27, 1989·20 cites·30 claims
- 2660US5380704ASuperconducting field effect transistor with increased channel lengthHITACHI LTD·Filed 1993·Granted Jan 10, 1995·20 cites·24 claims
- 2757US4531116AWarning system for indicating absence of emergency spare tire from a spare tire containerNISSAN MOTOR·Filed 1982·Granted Jul 23, 1985·14 cites·18 claims
- 2856US5914068ABi-layer oxide ferroelectricsHITACHI LTD·Filed 1995·Granted Jun 22, 1999·15 cites·37 claims
- 2956US5250506ASuperconductive switching element with semiconductor channelHITACHI LTD·Filed 1991·Granted Oct 5, 1993·14 cites·13 claims
- 3052US9068320B2Mounting baseTAKAGI KAZUMASA·Filed 2011·Granted Jun 30, 2015·2 cites·10 claims
- 3147US4921834AFlux method of growing oxide superconductorsHITACHI LTD·Filed 1988·Granted May 1, 1990·11 cites·11 claims
- 3246US4330782AFully-automatic antenna driving deviceNISSAN MOTOR·Filed 1980·Granted May 18, 1982·10 cites·5 claims
- 3343US5550389ASuperconducting deviceHITACHI LTD·Filed 1993·Granted Aug 27, 1996·6 cites·5 claims
- 3443US5231294AManganese-aluminum and manganese-silicon magnetic films, and magnetic recording mediumHITACHI LTD·Filed 1991·Granted Jul 27, 1993·8 cites·9 claims
- 3541US4279772ACrystal for scintillatorHITACHI CHEMICAL CO LTD·Filed 1980·Granted Jul 21, 1981·5 cites·4 claims
- 3637US4939045AMagnetic recording mediumHITACHI LTD·Filed 1988·Granted Jul 3, 1990·5 cites·22 claims
- 3731US4876144ASingle crystal thin filmHITACHI LTD·Filed 1987·Granted Oct 24, 1989·2 cites·12 claims
- 3831US2018355625A1Work gondolaMARUTAKA KOGYO INC·Filed 2016·Application pending·0 cites
- 3929US9284740B2Mortar peeling methodMARUTAKA KOGYO INC·Filed 2012·Granted Mar 15, 2016·0 cites·12 claims
- 4026US2014345589A1Peeling deviceMARUTAKA KOGYO INC·Filed 2012·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →