Inventor · disambiguated record
Hirofumi Kan
Also filed as: KAN HIROFUMI · SUSAKI WATARU
77 granted patents·69 pending applications·366 citations·filing 1974–2025
99Inventor score
Files withNGK INSULATORS LTD56HAMAMATSU PHOTONICS KK50TOSHIBA KK8CHU SHUCHENG2MITSUBISHI ELECTRIC CORP2
Top patents by PatentIndex Score
146 records- 0191US10862138B2Electrochemical cell and cell stack deviceNGK INSULATORS LTD·Filed 2019·Granted Dec 8, 2020·3 cites·6 claims
- 0288US10727524B2Cell stack deviceNGK INSULATORS LTD·Filed 2019·Granted Jul 28, 2020·3 cites·10 claims
- 0388US9953729B2Radiation generating apparatus and radiation generating methodWATARI TAKESHI·Filed 2012·Granted Apr 24, 2018·18 cites·12 claims
- 0487US7664148B2Passive Q switch laser deviceNAT INST NATURAL SCIENCES·Filed 2005·Granted Feb 16, 2010·11 cites·7 claims
- 0586US8075726B2Method for producing hermetically sealed container for beverage or foodNAKAYA MASAKI·Filed 2006·Granted Dec 13, 2011·12 cites·9 claims
- 0686US7424044B2Semiconductor laser deviceHAMAMATSU PHOTONICS KK·Filed 2006·Granted Sep 9, 2008·10 cites·5 claims
- 0784US7522643B2Semiconductor laser deviceHAMAMATSU PHOTONICS KK·Filed 2005·Granted Apr 21, 2009·13 cites·5 claims
- 0880US7447248B2Semiconductor laser element and semiconductor laser element arrayHAMAMATSU PHOTONICS KK·Filed 2005·Granted Nov 4, 2008·6 cites·12 claims
- 0980US6917058B2Semiconductor photocathodeHAMAMATSU PHOTONICS KK·Filed 2001·Granted Jul 12, 2005·26 cites·3 claims
- 1079US7599414B2Laser deviceHAMAMATSU PHOTONICS KK·Filed 2005·Granted Oct 6, 2009·9 cites·14 claims
- 1176US7759139B2Method for manufacturing silicon deviceHAMAMATSU PHOTONICS KK·Filed 2007·Granted Jul 20, 2010·7 cites·5 claims
- 1273US7885305B2Semiconductor laser device and semiconductor laser device arrayHAMAMATSU PHOTONICS KK·Filed 2005·Granted Feb 8, 2011·4 cites·9 claims
- 1373US6831341B2Photocathode having AlGaN layer with specified Mg content concentrationHAMAMATSU PHOTONICS KK·Filed 2001·Granted Dec 14, 2004·8 cites·4 claims
- 1473US2023357935A1Methane production system and methane production methodNGK INSULATORS LTD·Filed 2023·Application pending·0 cites
- 1572US7749640B2Fuel CellTOSHIBA KK·Filed 2007·Granted Jul 6, 2010·2 cites·20 claims
- 1672US5959400AElectron tube having a diamond field emitterHAMAMATSU PHOTONICS KK·Filed 1997·Granted Sep 28, 1999·23 cites·9 claims
- 1771US5986387ATransmission type electron multiplier and electron tube providedHAMAMATSU PHOTONICS KK·Filed 1997·Granted Nov 16, 1999·22 cites·11 claims
- 1870US10490836B2Power generation method for solid alkaline fuel cellNGK INSULATORS LTD·Filed 2019·Granted Nov 26, 2019·0 cites·1 claims
- 1970US5982094AElectron tube with polycrystalline diamond photocathodeHAMAMATSU PHOTONICS KK·Filed 1997·Granted Nov 9, 1999·22 cites·10 claims
- 2069US7622694B2Laser beam machineHAMAMATSU PHOTONICS KK·Filed 2006·Granted Nov 24, 2009·3 cites·1 claims
- 2169US7586968B2Heater-attached alkali-encapsulated cell and alkali laser apparatusHAMAMATSU PHOTONICS KK·Filed 2007·Granted Sep 8, 2009·3 cites·6 claims
- 2268US5872804ASolid-state laser amplifierHAMAMATSU PHOTONICS KK·Filed 1997·Granted Feb 16, 1999·35 cites·3 claims
- 2367US10957930B2Solid alkaline fuel cell including inorganic solid electrolyte enabled to permeate waterNGK INSULATORS LTD·Filed 2019·Granted Mar 23, 2021·0 cites·3 claims
- 2467US4183038ASemiconductor laser deviceMITSUBISHI ELECTRIC CORP·Filed 1978·Granted Jan 8, 1980·16 cites·10 claims
- 2567US2025360463A1Operating method for separation deviceNGK INSULATORS LTD·Filed 2025·Application pending·0 cites
- 2667US2024018668A1Methane production systemNGK INSULATORS LTD·Filed 2023·Application pending·0 cites
- 2767US2025367604A1Operating method for separation deviceNGK INSULATORS LTD·Filed 2025·Application pending·0 cites
- 2866US9805829B2Laser fusion device and nuclear fusion generating methodHAMAMATSU PHOTONICS KK·Filed 2013·Granted Oct 31, 2017·2 cites·6 claims
- 2966US7764432B2Laser equipmentHAMAMATSU PHOTONICS KK·Filed 2006·Granted Jul 27, 2010·5 cites·5 claims
- 3066US2025345749A1Transient operation method for separation deviceNGK INSULATORS LTD·Filed 2025·Application pending·0 cites
- 3166US2025354764A1Separation membrane system and a method of increasing and decreasing a temperature of a separation membraneNGK INSULATORS LTD·Filed 2025·Application pending·0 cites
- 3266US2025345750A1Transient operation method for separation deviceNGK INSULATORS LTD·Filed 2025·Application pending·0 cites
- 3365US11951438B2Liquid fuel synthesis systemNGK INSULATORS LTD·Filed 2022·Granted Apr 9, 2024·0 cites·8 claims
- 3464US10593977B2Solid alkaline fuel cellNGK INSULATORS LTD·Filed 2019·Granted Mar 17, 2020·0 cites·5 claims
- 3564US8765311B2Fuel cellOOZU HIDEYUKI·Filed 2008·Granted Jul 1, 2014·2 cites·12 claims
- 3664US7944956B2Heat sink, laser apparatus provided with such heat sink, and laser stack apparatusHAMAMATSU PHOTONICS KK·Filed 2006·Granted May 17, 2011·4 cites·1 claims
- 3764US7208874B2Transmitting type secondary electron surface and electron tubeHAMAMATSU PHOTONICS KK·Filed 2003·Granted Apr 24, 2007·5 cites·13 claims
- 3864US2023391697A1Reactor and liquid fuel synthesis methodNGK INSULATORS LTD·Filed 2023·Application pending·0 cites
- 3964US2024325969A1Membrane moduleNGK INSULATORS LTD·Filed 2024·Application pending·0 cites
- 4064US2025312748A1Separation membrane system and temperature increase method for a separation membraneNGK INSULATORS LTD·Filed 2025·Application pending·0 cites
- 4164US2024350983A1Reactor module and separation membrane moduleNGK INSULATORS LTD·Filed 2024·Application pending·0 cites
- 4263US11799119B2Manifold, cell stack device, and electrochemical cellNGK INSULATORS LTD·Filed 2020·Granted Oct 24, 2023·0 cites·15 claims
- 4363US6804275B2Heat sink and semiconductor laser apparatus and semiconductor laser stack apparatus using the sameHAMAMATSU PHOTONICS KK·Filed 2001·Granted Oct 12, 2004·7 cites·9 claims
- 4463US2024017237A1Reactor module, liquid fuel synthesis method, separation membrane module, and separation methodNGK INSULATORS LTD·Filed 2023·Application pending·0 cites
- 4563US2025001365A1Separation membrane moduleNGK INSULATORS LTD·Filed 2024·Application pending·0 cites
- 4662US7652425B2Transmission type photocathode including light absorption layer and voltage applying arrangement and electron tubeHAMAMATSU PHOTONICS KK·Filed 2003·Granted Jan 26, 2010·4 cites·12 claims
- 4762US7567598B2Semiconductor laser equipmentHAMAMATSU PHOTONICS KK·Filed 2005·Granted Jul 28, 2009·2 cites·6 claims
- 4862US6563264B2Photocathode and electron tubeHAMAMATSU PHOTONICS KK·Filed 2001·Granted May 13, 2003·5 cites·4 claims
- 4962US2024316527A1Reactor moduleNGK INSULATORS LTD·Filed 2024·Application pending·0 cites
- 5062US2014147761A1Fuel cellMURATA MANUFACTURING CO·Filed 2014·Application pending·0 cites
Showing the top 50 of 146 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Hirofumi Kan 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 →