Inventor · disambiguated record
Takashi Ishizuka
Also filed as: ISHIZUKA TAKASHI
46 granted patents·10 pending applications·211 citations·filing 1974–2023
97Inventor score
Files withSUMITOMO ELECTRIC INDUSTRIES14NITTO ELECTRIC IND CO8AKITA KATSUSHI5FUJII KEI5HITACHI HIGH TECH CORP3
Top patents by PatentIndex Score
56 records- 0187US4860050ADeveloping replenisher material for use in image forming deviceRICOH KK·Filed 1987·Granted Aug 22, 1989·33 cites·52 claims
- 0286US11597847B2Plasma-curable offset printing ink composition, method for producing printed matter using same, and printing methodSAKATA INX CORP·Filed 2018·Granted Mar 7, 2023·2 cites·11 claims
- 0381US9040955B2Semiconductor device, optical sensor device and semiconductor device manufacturing methodFUJII KEI·Filed 2011·Granted May 26, 2015·2 cites·11 claims
- 0481US8642943B2Semiconductor wafer, light-receiving element, light-receiving element array, hybrid-type detection device, optical sensor device, and process for production of semiconductor waferMORI HIROKI·Filed 2010·Granted Feb 4, 2014·4 cites·16 claims
- 0578US4008195AAqueous insulating varnishesNITTO ELECTRIC IND CO·Filed 1974·Granted Feb 15, 1977·16 cites·14 claims
- 0677US8461570B2Semiconductor device and manufacturing method thereofFUJII KEI·Filed 2010·Granted Jun 11, 2013·4 cites·7 claims
- 0777US4457285ASustained arc ignition system for an internal combustion engineNISSAN MOTOR·Filed 1982·Granted Jul 3, 1984·18 cites·6 claims
- 0877US4101488AWater-soluble heat-resistant insulating varnishNITTO ELECTRIC IND CO·Filed 1975·Granted Jul 18, 1978·24 cites·25 claims
- 0973US9129808B2Epitaxial wafer, photodiode, optical sensor device, and methods for producing epitaxial wafer and photodiodeFUJII KEI·Filed 2011·Granted Sep 8, 2015·3 cites·10 claims
- 1071US8707872B2Railway vehicleKURODA MASARU·Filed 2011·Granted Apr 29, 2014·3 cites·20 claims
- 1171US8198623B2Photodiode array, method for manufacturing photodiode array, epitaxial wafer, and method for manufacturing epitaxial waferAKITA KATSUSHI·Filed 2010·Granted Jun 12, 2012·2 cites·11 claims
- 1269US9090266B2Railway vehicleNAKAO KOJI·Filed 2011·Granted Jul 28, 2015·3 cites·15 claims
- 1367US9806156B2Laminated body and electronic deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2016·Granted Oct 31, 2017·1 cites·5 claims
- 1467US9159853B2Group III-V compound semiconductor photo detector, method of fabricating group III-V compound semiconductor photo detector, photo detector, and epitaxial waferSUMITOMO ELECTRIC INDUSTRIES·Filed 2013·Granted Oct 13, 2015·1 cites·7 claims
- 1565US9680040B2Semiconductor device and method for manufacturing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2014·Granted Jun 13, 2017·1 cites·14 claims
- 1665US8866199B2Group III-V compound semiconductor photo detector, method of fabricating group III-V compound semiconductor photo detector, photo detector, and epitaxial waferAKITA KATSUSHI·Filed 2010·Granted Oct 21, 2014·1 cites·7 claims
- 1764US4381210AProcess for producing polyimide tubesNITTO ELECTRIC IND CO·Filed 1981·Granted Apr 26, 1983·15 cites·7 claims
- 1864US3936404AAqueous baking varnishes from carboxylic polyester and carboxylic polyimide, and coated articleNITTO ELECTRIC IND CO·Filed 1974·Granted Feb 3, 1976·13 cites·15 claims
- 1963US11926744B2Ink composition for plasma curing and additive for ink compositions for plasma curingSAKATA INX CORP·Filed 2019·Granted Mar 12, 2024·0 cites·3 claims
- 2062US4347286AHeat fusible polyimide compound films and process for producing the sameNITTO ELECTRIC IND CO·Filed 1981·Granted Aug 31, 1982·14 cites·16 claims
- 2160US4499042AProduction of heat-shrinkable polyimide filmsNITTO ELECTRIC IND CO·Filed 1983·Granted Feb 12, 1985·13 cites·6 claims
- 2258US2014054545A1Photodetector, epitaxial wafer and method for producing the sameSUMITOMO ELECTRIC INDUSTRIES·Filed 2012·Application pending·0 cites
- 2357US4208464AArticle coated with baked layer of water-soluble heat-resistant insulating varnishNITTO ELECTRIC IND CO·Filed 1978·Granted Jun 17, 1980·13 cites·38 claims
- 2457US2024399171A1Multileaf collimator and radiation therapy deviceHITACHI HIGH TECH CORP·Filed 2023·Application pending·0 cites
- 2556US8822977B2Photodetector and method of manufacturing the photodetectorAKITA KATSUSHI·Filed 2011·Granted Sep 2, 2014·0 cites·10 claims
- 2656US2015001466A1Group iii-v compound semiconductor photo detector, method of fabricating group iii-v compound semiconductor photo detector, photo detector, and epitaxial waferSUMITOMO ELECTRIC INDUSTRIES·Filed 2014·Application pending·0 cites
- 2755USD1084340SRadiation therapy deviceHITACHI HIGH TECH CORP·Filed 2023·Granted Jul 15, 2025·1 cites·1 claims
- 2855US8689702B2Railway vehicleISHIZUKA TAKASHI·Filed 2011·Granted Apr 8, 2014·1 cites·18 claims
- 2955US2013313521A1Photodiode and method for producing the sameAKITA KATSUSHI·Filed 2012·Application pending·0 cites
- 3054US11878612B2Conveyance seatTS TECH CO LTD·Filed 2020·Granted Jan 23, 2024·0 cites·14 claims
- 3154US8921829B2Light receiving element, light receiving element array, hybrid-type detecting device, optical sensor device, and method for producing light receiving element arrayIGUCHI YASUHIRO·Filed 2011·Granted Dec 30, 2014·0 cites·12 claims
- 3252US7702374B2Measuring probe and living body optical measuring deviceHITACHI MEDICAL CORP·Filed 2003·Granted Apr 20, 2010·8 cites·18 claims
- 3351US11081605B2Semiconductor laminate, light-receiving element, and method for manufacturing semiconductor laminateSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Granted Aug 3, 2021·0 cites·12 claims
- 3451US10790401B2Semiconductor stacked body and light-receiving deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Granted Sep 29, 2020·0 cites·12 claims
- 3551US10594110B2Vertical cavity surface emitting laser, method for fabricating vertical cavity surface emitting laserSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Granted Mar 17, 2020·0 cites·5 claims
- 3651US8309380B2Photodiode array, method for manufacturing photodiode array, epitaxial wafer, and method for manufacturing epitaxial waferAKITA KATSUSHI·Filed 2012·Granted Nov 13, 2012·0 cites·12 claims
- 3750US9818895B2Semiconductor device, optical sensor device and semiconductor device manufacturing methodSUMITOMO ELECTRIC INDUSTRIES·Filed 2015·Granted Nov 14, 2017·0 cites·8 claims
- 3850US2025319802A1Conveyance seatTS TECH CO LTD·Filed 2023·Application pending·0 cites
- 3949US11318773B2Printing apparatus and method for manufacturing printed matterSAKATA INX CORP·Filed 2019·Granted May 3, 2022·0 cites·14 claims
- 4049US11152521B2Semiconductor laminate and light-receiving elementSUMITOMO ELECTRIC INDUSTRIES·Filed 2019·Granted Oct 19, 2021·0 cites·17 claims
- 4147US6830995B2Method of diffusing zinc into article and method of heating articleSUMITOMO ELECTRIC INDUSTRIES·Filed 2003·Granted Dec 14, 2004·1 cites·19 claims
- 4247US4007146AAqueous insulating varnishesNITTO ELECTRIC IND CO·Filed 1975·Granted Feb 8, 1977·8 cites·12 claims
- 4347US2019044306A1Vertical cavity surface emitting laser, method for fabricating vertical cavity surface emitting laserSUMITOMO ELECTRIC INDUSTRIES·Filed 2018·Application pending·0 cites
- 4445US9825134B2Layered semiconductor having base layer including GaN substrateSUMITOMO ELECTRIC INDUSTRIES·Filed 2015·Granted Nov 21, 2017·0 cites·3 claims
- 4545USD758586SNear-infrared spectroscopy systemHITACHI MEDICAL CORP·Filed 2015·Granted Jun 7, 2016·4 cites·1 claims
- 4644US11312272B2Conveyance seatTS TECH CO LTD·Filed 2018·Granted Apr 26, 2022·0 cites·17 claims
- 4744US9883825B2Living body optical measurement apparatus, living body optical measurement method, and engagement member for mobile position sensorHITACHI MEDICAL CORP·Filed 2013·Granted Feb 6, 2018·0 cites·14 claims
- 4842US2014367640A1Light-emitting element, epitaxial wafer, and method for producing the epitaxial waferSUMITOMO ELECTRIC INDUSTRIES·Filed 2013·Application pending·0 cites
- 4941USD1079014SPatient tableHITACHI HIGH TECH CORP·Filed 2023·Granted Jun 10, 2025·0 cites·1 claims
- 5041US8232329B2Inkjet inkOTSUKA HIDENORI·Filed 2009·Granted Jul 31, 2012·0 cites·3 claims
Showing the top 50 of 56 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Takashi Ishizuka files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →