Inventor · disambiguated record
Tsutomu Kawashima
Also filed as: KAWASHIMA TSUTOMU
26 granted patents·11 pending applications·484 citations·filing 1989–2022
95Inventor score
Files withPANASONIC IP MAN CO LTD19PANASONIC CORP5CALSONIC KANSEI CORP4MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4NISSO ENGINEERING CO LTD2
Top patents by PatentIndex Score
37 records- 0198US5831374APlasma display panel, method of fabricating the same, and display apparatus using the plasma display panelMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Nov 3, 1998·179 cites·3 claims
- 0289US10707494B2Gas diffusion layer for fuel cell, method for manufacturing said layer, membrane-electrode assembly, and fuel cellPANASONIC IP MAN CO LTD·Filed 2016·Granted Jul 7, 2020·3 cites·16 claims
- 0386US7632589B2Fuel-cell stack and fuel cellPANASONIC CORP·Filed 2006·Granted Dec 15, 2009·13 cites·13 claims
- 0485US5990618APlasma display panel and heat sinkMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Nov 23, 1999·51 cites·5 claims
- 0583US4980017AMethod for recirculating high-temperature etching solutionNISSO ENGINEERING COMPANY LTD·Filed 1989·Granted Dec 25, 1990·100 cites·4 claims
- 0682US7393012B2Knee bolster structureCALSONIC KANSEI CORP·Filed 2004·Granted Jul 1, 2008·37 cites·17 claims
- 0773US5470421AMethod for purification of etching solutionNISSO ENGINEERING CO LTD·Filed 1994·Granted Nov 28, 1995·60 cites·9 claims
- 0872US12272849B2Membrane electrode assembly for fuel cell, and fuel cellPANASONIC IP MAN CO LTD·Filed 2022·Granted Apr 8, 2025·0 cites·14 claims
- 0972US11984607B2Gas diffusion layer, membrane electrode assembly, fuel cell, and manufacturing method of gas diffusion layerPANASONIC CORP·Filed 2021·Granted May 14, 2024·0 cites·13 claims
- 1069US8361673B2Fuel cell and method for manufacturing samePANASONIC CORP·Filed 2010·Granted Jan 29, 2013·2 cites·6 claims
- 1169US7185917B2Knee bolster structureCALSONIC KANSEI CORP·Filed 2004·Granted Mar 6, 2007·22 cites·20 claims
- 1266US11489174B2Fuel battery cell, fuel battery, and method of manufacturing fuel battery cellPANASONIC IP MAN CO LTD·Filed 2021·Granted Nov 1, 2022·0 cites·10 claims
- 1366US8642230B2Electrode-membrane-frame assembly for fuel cell, polyelectrolyte fuel cell and manufacturing method thereforKAWASHIMA TSUTOMU·Filed 2008·Granted Feb 4, 2014·2 cites·8 claims
- 1465US12368176B2Membrane electrode assembly and fuel cellPANASONIC IP MAN CO LTD·Filed 2022·Granted Jul 22, 2025·0 cites·5 claims
- 1565US7832764B2Knee protector structure for vehicleCALSONIC KANSEI CORP·Filed 2006·Granted Nov 16, 2010·7 cites·11 claims
- 1662US11515542B2Fuel batteryPANASONIC IP MAN CO LTD·Filed 2021·Granted Nov 29, 2022·0 cites·16 claims
- 1762US11276861B2Positive electrode for air batteryPANASONIC IP MAN CO LTD·Filed 2019·Granted Mar 15, 2022·0 cites·11 claims
- 1860US2019252694A1Method for producing fuel cell modulePANASONIC IP MAN CO LTD·Filed 2019·Application pending·0 cites
- 1960US2013216939A1Separator for polymer electrolyte fuel cell, and polymer electrolyte fuel cellPANASONIC CORP·Filed 2013·Application pending·0 cites
- 2059US2021313652A1Gas diffusion layer, membrane electrode assembly, and fuel batteryPANASONIC IP MAN CO LTD·Filed 2021·Application pending·0 cites
- 2158US10978716B2Gas diffusion layer for fuel battery, membrane electrode assembly, and fuel batteryPANASONIC IP MAN CO LTD·Filed 2019·Granted Apr 13, 2021·0 cites·16 claims
- 2258US10326150B2Fuel cell module, fuel cell stack, and method for producing fuel cell modulePANASONIC IP MAN CO LTD·Filed 2015·Granted Jun 18, 2019·0 cites·4 claims
- 2357US12126030B2Fuel-cell cellPANASONIC IP MAN CO LTD·Filed 2019·Granted Oct 22, 2024·0 cites·7 claims
- 2456US2022149409A1Membrane electrode assembly and fuel cellPANASONIC IP MAN CO LTD·Filed 2020·Application pending·0 cites
- 2553US2005287415A1Separator for polymer electrolyte fuel cell, polymer electrolyte fuel cell, method of evaluating separator for polymer electrolyte fuel cell, and method of manufacturing separator for polymer electrolyte fuel cellMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2005·Application pending·0 cites
- 2652US10326148B2Fuel cell gas diffusion layer and method of manufacturing samePANASONIC CORP·Filed 2013·Granted Jun 18, 2019·0 cites·4 claims
- 2746US9419301B2Electrolyte membrane for solid polymer fuel cells, membrane electrode assembly having said electrolyte membrane, and solid polymer fuel cellMORI MASAHIRO·Filed 2011·Granted Aug 16, 2016·0 cites·18 claims
- 2846US2019081375A1Positive electrode for air batteryPANASONIC IP MAN CO LTD·Filed 2018·Application pending·0 cites
- 2945US11108055B2Fuel cellPANASONIC IP MAN CO LTD·Filed 2018·Granted Aug 31, 2021·0 cites·5 claims
- 3044US10847826B2Polymer electrolyte fuel cells and production method thereofPANASONIC IP MAN CO LTD·Filed 2018·Granted Nov 24, 2020·0 cites·12 claims
- 3144US2019006696A1Fuel cellPANASONIC IP MAN CO LTD·Filed 2018·Application pending·0 cites
- 3242US2017179498A1Fuel cell gas diffusion layer, fuel cell, and method for manufacturing fuel cell gas diffusion layerPANASONIC IP MAN CO LTD·Filed 2017·Application pending·0 cites
- 3342US2017162878A1Gas diffusion layer for fuel cell, fuel cell, and formation method for gas diffusion layer for fuel cellPANASONIC IP MAN CO LTD·Filed 2017·Application pending·0 cites
- 3442US2003027030A1Fuel-cell separator, production of the same, and fuel cellMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Application pending·0 cites
- 3539US10923742B2Fuel cell and method for manufacturing fuel cellPANASONIC IP MAN CO LTD·Filed 2017·Granted Feb 16, 2021·0 cites·8 claims
- 3639US2004164524A1Airbag apparatus for vehicleCALSONIC KANSEI CORP·Filed 2003·Application pending·0 cites
- 3738US6098848AMethod and apparatus for connecting a fluid reservoir with pipelinesNISSO ENGINEERING CO LTD·Filed 1998·Granted Aug 8, 2000·8 cites·23 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →