Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10074857 | Titanium or titanium alloy material for fuel cell separator having high contact conductivity with carbon and high durability, fuel cell separator including the same, and manufacturing method therefor | Yuuichi Yosida, Taku Kagawa, Takumi Nishimoto, Koki Tanaka, Masao Kimura +3 more | 2018-09-11 |
| 9947942 | Titanium material or titanium alloy material for fuel cell separator having high contact conductivity with carbon and high durability, fuel cell separator including the same, and fuel cell | Kazuhiro Takahashi, Taku Kagawa, Kiyonori Tokuno, Takumi Nishimoto, Koki Tanaka | 2018-04-17 |
| 9065081 | Titanium material for solid polymer fuel cell separator use and method of production of same | Koki Tanaka, Kazuhiro Takahashi, Kiyonori Tokuno | 2015-06-23 |
| 8845400 | Rotary grinding tool and its production method | Atsumi Imai, Takehide Aiga, Masanori Nagai, Takayuki Sato, Kenji Fujimoto +1 more | 2014-09-30 |
| 8785031 | Polymer electrolyte fuel cell separator made of pure titanium or titanium alloy and method of production of same | Michio Kaneko, Kazuhiro Takahashi, Kiyonori Tokuno, Wataru Hisada | 2014-07-22 |
| 8603268 | Titanium material for solid polymer fuel cell separator having low contact resistance and method of production of same | Kazuhiro Takahashi, Kiyonori Tokuno, Koki Tanaka, Michio Kaneko | 2013-12-10 |
| 8361676 | Solid polymer type fuel cell separator and method of production of same | Koki Tanaka, Youichi Ikematsu, Michio Kaneko, Wataru Hisada, Tamotsu Itoh | 2013-01-29 |
| 8304141 | Stainless steel, titanium, or titanium alloy solid polymer fuel cell separator and its method of production and method of evaluation of warp and twist of separator | Michio Kaneko, Mitsuharu Yamagata, Koki Tanaka, Yoichi Ikematsu, Yoichi Matsuzaki +3 more | 2012-11-06 |
| 8182961 | Solid polymer type fuel cell separator and method of production of same | Koki Tanaka, Youichi Ikematsu, Michio Kaneko, Wataru Hisada, Tamotsu Itoh | 2012-05-22 |
| 7807281 | Stainless steel, titanium, or titanium alloy solid polymer fuel cell separator and its method of production and method of evaluation of warp and twist of separator | Michio Kaneko, Mitsuharu Yamagata, Koki Tanaka, Yoichi Ikematsu, Yoichi Matsuzaki +3 more | 2010-10-05 |
| 7231318 | Method for predicting degree of corrosion of weather-resistant steel | Yasumori Fujii, Yoshiyuki Harada, Takashi Kusunoki, Norihito Fujikawa, Hiroshi Takezawa +2 more | 2007-06-12 |
| 6726953 | Method for depositing metal having high corrosion resistance and low contact resistance against carbon on separator for fuel cell | Wataru Hisada | 2004-04-27 |
| 6709781 | Separators for solid polymer fuel cells and method for producing same, and solid polymer fuel cells | Noriyuki Suzuki, Yuichi Yoshida, Tsutomu Haeno | 2004-03-23 |
| 6703143 | Metal foil excellent in electrical contact stability | Masao Kikuchi | 2004-03-09 |
| 5691811 | Method of and apparatus for detecting defect of transparent sheet as sheet glass | — | 1997-11-25 |
| 4962360 | Sensor for electrochemical measurement and method for diagnosing corrosion protective properties of metal surface coating by using the sensor | Koji Homma, Satoshi Ito, Kazumi Matsuoka, Noriyuki Hirosawa | 1990-10-09 |
| 4861453 | Corrosion detecting probe for steel buried in concrete | Kazumi Matsuoka, Satoshi Ito, Tomomi Murata | 1989-08-29 |
| 4806849 | Method and apparatus for diagnosing degradation of coating film on metal material | Satoshi Ito, Tomomi Murata, Shunji Sakamoto, Kazuo Yamamoto | 1989-02-21 |
| 4800165 | Method of detecting corrosion rate of member of steel material | Tomoki OKA, Kazumi Matsuoka, Satoshi Ito | 1989-01-24 |