TK

Tsutomu Kawashima

PA Panasonic: 18 patents #1,184 of 21,108Top 6%
CK Calsonic Kansei: 3 patents #110 of 675Top 20%
NC Nissho Engineering Co.: 3 patents #1 of 26Top 4%
Sumitomo Electric Industries: 2 patents #9,741 of 21,551Top 50%
KK Kanto Kagaku: 1 patents #73 of 181Top 45%
Overall (All Time): #149,971 of 4,157,543Top 4%
26
Patents All Time

Issued Patents All Time

Showing 1–25 of 26 patents

Patent #TitleCo-InventorsDate
12368176 Membrane electrode assembly and fuel cell Takeshi Minamiura, Kenichi Ezaki, Shinichiro Imura, Miyuki Yoshimoto 2025-07-22
12272849 Membrane electrode assembly for fuel cell, and fuel cell Shinichiro Imura, Takeshi Minamiura, Kenichi Ezaki, Miyuki Yoshimoto 2025-04-08
12126030 Fuel-cell cell SHUZO TSUCHIDA, RYOUHEI SEKI 2024-10-22
11984607 Gas diffusion layer, membrane electrode assembly, fuel cell, and manufacturing method of gas diffusion layer Yoko Yamamoto, Miyuki Yoshimoto, Koji Ogawa 2024-05-14
11515542 Fuel battery Shinichiro Imura 2022-11-29
11489174 Fuel battery cell, fuel battery, and method of manufacturing fuel battery cell Yoko Yamamoto 2022-11-01
11276861 Positive electrode for air battery Koichi Sawada 2022-03-15
11108055 Fuel cell Yoko Kasai, YOSHIFUMI TAGUCHI, Tsutomu Fujii, Shinichiro Imura, Toshihiro Otsuka +2 more 2021-08-31
10978716 Gas diffusion layer for fuel battery, membrane electrode assembly, and fuel battery YOSHIFUMI TAGUCHI, Kenichi Ezaki 2021-04-13
10923742 Fuel cell and method for manufacturing fuel cell Takeshi Minamiura, Takashi Yasuo, Hiroaki Suzuki, Miyuki Yoshimoto, Shinichiro Imura 2021-02-16
10847826 Polymer electrolyte fuel cells and production method thereof Yoko Kasai, Miyuki Yoshimoto, YOSHIFUMI TAGUCHI, Hiroaki Suzuki, Shinichiro Imura 2020-11-24
10707494 Gas diffusion layer for fuel cell, method for manufacturing said layer, membrane-electrode assembly, and fuel cell Keiichi Kondou, Masashi Shoji, Koji Ogawa 2020-07-07
10326150 Fuel cell module, fuel cell stack, and method for producing fuel cell module YOSHIFUMI TAGUCHI, Norihisa Yoshimoto, Mitsuo Yoshimura 2019-06-18
10326148 Fuel cell gas diffusion layer and method of manufacturing same Takeou Okanishi, Hiroshi Ishikawa, Keiichi Yamamoto, Yasushi Sugawara, Yoichiro Tsuji +2 more 2019-06-18
9419301 Electrolyte membrane for solid polymer fuel cells, membrane electrode assembly having said electrolyte membrane, and solid polymer fuel cell Masahiro Mori, Shinya Kikuzumi, Yasuhiro Ueyama, Kazunori Kubota 2016-08-16
8642230 Electrode-membrane-frame assembly for fuel cell, polyelectrolyte fuel cell and manufacturing method therefor Norihiko Kawabata, Toshihiro Matsumoto, Atsushi Murata, Takashi Morimoto 2014-02-04
8361673 Fuel cell and method for manufacturing same Hideyo Higashino, Takashi Nakagawa 2013-01-29
7832764 Knee protector structure for vehicle Shin Moteki, Nobuhiro Nagata, Keigo Hayata, Yoshiharu Nakamura, Yorihito Okuda 2010-11-16
7632589 Fuel-cell stack and fuel cell Toshimasa Osumi, Masatoshi Teranishi, Toru Sukawa 2009-12-15
7393012 Knee bolster structure Kazuki Funakura, Nobuhiro Nagata 2008-07-01
7185917 Knee bolster structure Nobuhiro Nagata, Tomiyuki Yasuno 2007-03-06
6098848 Method and apparatus for connecting a fluid reservoir with pipelines Koji Ueda, Tsugio Saito, Kenji Kageyama 2000-08-08
5990618 Plasma display panel and heat sink Makoto Morita, Takashi Ichiyanagi, Junji Ikeda, Naomi Nishiki, Takao Inoue +1 more 1999-11-23
5831374 Plasma display panel, method of fabricating the same, and display apparatus using the plasma display panel Makoto Morita, Takashi Ichiyanagi, Junji Ikeda, Naomi Nishiki, Takao Inoue +1 more 1998-11-03
5470421 Method for purification of etching solution Akira Nakada, Akira Yoneya, Noriyuki Kobayashi, Mamoru Katayanagi, Hiroshi Yoshida 1995-11-28