Inventor
Tsutomu Kawashima
Inventor
Nara, JP
Overview
16→
Patents
1990–2020
Patent span
General tagging of new technological developments
Primary field (CPC Y)
Patents· 16 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Mprimary
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy22%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution22%
Y02PClimate change mitigation technologies in the production or processing of goods17%
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for8%
Y10TTechnical subjects covered by former us classification8%
H01JElectric discharge tubes or discharge lamps6%
H05KPrinted circuits6%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h106%
B67DDispensing, delivering or transferring liquids, not otherwise provided for3%
H01BCables3%
PatentTitleYear
10,847,826Polymer electrolyte fuel cells and production method thereof202010,707,494Gas diffusion layer for fuel cell, method for manufacturing said layer, membrane-electrode assembly, and fuel cell202010,326,150Fuel cell module, fuel cell stack, and method for producing fuel cell module201910,326,148Fuel cell gas diffusion layer and method of manufacturing same20199,419,301'Electrolyte membrane for solid polymer fuel cells, membrane electrode assembly having said electrolyte membrane, and solid polymer fuel cell'20168,642,230'Electrode-membrane-frame assembly for fuel cell, polyelectrolyte fuel cell and manufacturing method therefor'20148,361,673'Fuel cell and method for manufacturing same'20137,832,764'Knee protector structure for vehicle'20107,632,589'Fuel-cell stack and fuel cell'20097,393,012'Knee bolster structure'20087,185,917'Knee bolster structure'20076,098,848'Method and apparatus for connecting a fluid reservoir with pipelines'20005,990,618'Plasma display panel and heat sink'19995,831,374'Plasma display panel, method of fabricating the same, and display apparatus using the plasma display panel'19985,470,421'Method for purification of etching solution'19954,980,017'Method for recirculating high-temperature etching solution'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990–1995Based in Koto-ku, JP· patent location history
1998–1999Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (2)· patent assignee history
1998–1999Based in Katano, JP· patent location history
2000–2010Based in Tokyo, JP· patent location history
2007–2010Patents assigned to CALSONIC KANSEI CORP (3)· patent assignee history
2009–2019Patents assigned to PANASONIC CORP (4)· patent assignee history
2009–2020Based in Nara, JP· patent location history
2013–2016Patents assigned to KAWASHIMA TSUTOMU (3)· patent assignee history
2016–2020Patents assigned to PANASONIC IP MAN CO LTD (5)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PANASONIC IP MAN CO LTD | 5 | 2016–2020 |
| PANASONIC CORP | 4 | 2009–2019 |
| CALSONIC KANSEI CORP | 3 | 2007–2010 |
| KAWASHIMA TSUTOMUself | 3 | 2013–2016 |
| MATSUSHITA ELECTRIC INDUSTRIAL CO LTD | 2 | 1998–1999 |
Locations
| Location | Patents | Span |
|---|---|---|
| Nara, JP | 8 | 2009–2020 |
| Tokyo, JP | 4 | 2000–2010 |
| Katano, JP | 2 | 1998–1999 |
| Koto-ku, JP | 2 | 1990–1995 |