Inventor · disambiguated record
Kenji Hirai
Also filed as: HIRAI KENJI · HIRAI KOHJI
30 granted patents·8 pending applications·195 citations·filing 1975–2023
96Inventor score
Files withJUJO PAPER CO LTD15MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4TOSHIBA KK3HIRAI KENJI2TOKYO SHIBAURA ELECTRIC CO2
Top patents by PatentIndex Score
38 records- 0190US8283284B2Thermosensitive recording mediumHIRAI KENJI·Filed 2008·Granted Oct 9, 2012·11 cites·5 claims
- 0288US8609582B2Thermosensitive recording mediumHIRAI KENJI·Filed 2010·Granted Dec 17, 2013·6 cites·17 claims
- 0388US8247347B2Thermosensitive recording mediumTAKAGI KEN·Filed 2008·Granted Aug 21, 2012·11 cites·5 claims
- 0486US8466085B2Thermosensitive recording mediumKATO AYA·Filed 2007·Granted Jun 18, 2013·7 cites·3 claims
- 0585US12246549B2Thermosensitive recording mediumJUJO PAPER CO LTD·Filed 2021·Granted Mar 11, 2025·1 cites·5 claims
- 0685US12053997B2Thermosensitive recording mediumJUJO PAPER CO LTD·Filed 2020·Granted Aug 6, 2024·1 cites·20 claims
- 0785US11912052B2Thermosensitive recording mediumJUJO PAPER CO LTD·Filed 2020·Granted Feb 27, 2024·1 cites·17 claims
- 0881US7387984B2Thermally sensitive recording mediumJUJO PAPER CO LTD·Filed 2005·Granted Jun 17, 2008·5 cites·3 claims
- 0975US6487878B1Method for manufacturing a discharge tubeMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Dec 3, 2002·8 cites·21 claims
- 1073US10527189B2Valve actuator for an electrically actuated poppet valve including a continuously variable transmission and a power free latching mechanismIHI CORP·Filed 2018·Granted Jan 7, 2020·2 cites·3 claims
- 1169US7465694B2Thermally sensitive recording mediumJUJO PAPER CO LTD·Filed 2005·Granted Dec 16, 2008·1 cites·6 claims
- 1269US7139735B2Administration planning systemCHUGOKU ELECTRIC POWER·Filed 2003·Granted Nov 21, 2006·3 cites·15 claims
- 1367US6609048B2Power amount control methodMITSUBISHI ELECTRIC CORP·Filed 2001·Granted Aug 19, 2003·30 cites·1 claims
- 1467US4514699AMicrowave power amplifier/combinerTOKYO SHIBAURA ELECTRIC CO·Filed 1982·Granted Apr 30, 1985·14 cites·18 claims
- 1565US7312176B2Thermally sensitive recording mediumJUJO PAPER CO LTD·Filed 2003·Granted Dec 25, 2007·6 cites·6 claims
- 1664US5407023ASlip control system for vehicleMAZDA MOTOR·Filed 1994·Granted Apr 18, 1995·31 cites·8 claims
- 1764US2025214362A1Thermosensitive recording mediumJUJO PAPER CO LTD·Filed 2023·Application pending·0 cites
- 1860US11945249B2Thermosensitive recording mediumJUJO PAPER CO LTD·Filed 2020·Granted Apr 2, 2024·0 cites·19 claims
- 1960US10464362B2Thermosensitive recording mediumJUJO PAPER CO LTD·Filed 2016·Granted Nov 5, 2019·0 cites·10 claims
- 2060US4008446AMicrowave oscillation device whose oscillation frequency is controlled at the resonance frequency of a dielectric resonatorTOKYO SHIBAURA ELECTRIC CO·Filed 1975·Granted Feb 15, 1977·12 cites·14 claims
- 2159US11613850B2Base paper for paper tube, and paper tubeJUJO PAPER CO LTD·Filed 2019·Granted Mar 28, 2023·0 cites·5 claims
- 2258US6568216B2Method for manufacturing a discharge tubeMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted May 27, 2003·2 cites·26 claims
- 2358US6515412B1Fluorescent lampMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Feb 4, 2003·6 cites·11 claims
- 2457US2024316975A1Thermosensitive recording materialNICCA CHEMICAL CO·Filed 2022·Application pending·0 cites
- 2556US2024308260A1Thermosensitive recording mediumJUJO PAPER CO LTD·Filed 2022·Application pending·0 cites
- 2656US2024190156A1Thermosensitive recording mediumJUJO PAPER CO LTD·Filed 2022·Application pending·0 cites
- 2755US4588964AHermetically sealed microwave solid-state oscillator with dielectric resonator tuned by electromagnetically coupled terminating admittanceTOSHIBA KK·Filed 1984·Granted May 13, 1986·12 cites·11 claims
- 2850US2013136131A1Relay device and activation method of electronic deviceBUFFALO INC·Filed 2012·Application pending·0 cites
- 2949US5591406AAutomatic exhaust gas analyzer for an internal combustion engineSHIMADZU CORP·Filed 1995·Granted Jan 7, 1997·18 cites·5 claims
- 3048US2002019740A1Electric power marketing method and electric power marketing systemFiled 2001·Application pending·0 cites
- 3148US2020406658A1Thermosensitive recording mediumJUJO PAPER CO LTD·Filed 2019·Application pending·0 cites
- 3245US7476642B2Thermally sensitive recording mediumJUJO PAPER CO LTD·Filed 2004·Granted Jan 13, 2009·0 cites·8 claims
- 3343US6977462B2Fluorescent lamp having phosphor layerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Dec 20, 2005·0 cites·17 claims
- 3439US10000083B2Thermosensitive recording mediumJUJO PAPER CO LTD·Filed 2015·Granted Jun 19, 2018·0 cites·14 claims
- 3538US4688004AFrequency-changeable microwave signal generator having plural selectively operated oscillatorsTOSHIBA KK·Filed 1986·Granted Aug 18, 1987·4 cites·20 claims
- 3638US2008194403A1Laser Recording Thermally Sensitive Recording MediumNATSUI JUNPEI·Filed 2005·Application pending·0 cites
- 3733US4648129AFrequency converterTOSHIBA KK·Filed 1984·Granted Mar 3, 1987·3 cites·5 claims
- 3829US9001859B2Ridge semiconductor laser and method for manufacturing a ridge semiconductor laserKOZEN ATSUO·Filed 2011·Granted Apr 7, 2015·0 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →