Issued Patents All Time
Showing 26–48 of 48 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7674445 | Method for purifying hydrogen in a reformed gas | Takeshi Tomizawa, Kunihiro Ukai, Kimiyasu Honda, Toshiyuki Shono, Kouchiro Kitagawa | 2010-03-09 |
| 7419518 | Hydrogen generator and fuel cell system | Kunihiro Ukai, Hidenobu Wakita, Seiji Fujihara, Yukimune Kani | 2008-09-02 |
| 7410930 | Recovering catalyst and carrier by exfoliating overcoat layer on the surface of a catalyst layer | Hidenobu Wakita, Seiji Fujihara, Kunihiro Ukai | 2008-08-12 |
| 7399328 | Hydrogen gas station, fuel cell system, and hydrogen gas rate accounting device | Kunihiro Ukai, Hidenobu Wakita, Seiji Fujihara, Yukimune Kani | 2008-07-15 |
| 7357015 | Gas concentration sensor, hydrogen purification unit using this and fuel cell system | Takeshi Tomizawa, Kunihiro Ukai | 2008-04-15 |
| 7279142 | Hydrogen refining apparatus | Kunihiro Ukai, Takeshi Tomizawa, Seiji Fujiwara | 2007-10-09 |
| 7265076 | CO removal catalyst, method of producing CO removal catalyst, hydrogen purifying device and fuel cell system | Kunihiro Ukai, Hidenobu Wakita, Seiji Fujihara | 2007-09-04 |
| 7258704 | Hydrogen generator and fuel cell system having the same | Seiji Fujihara, Kunihiro Ukai, Hidenobu Wakita | 2007-08-21 |
| 7201983 | Hydrogen generation apparatus and method and fuel cell system | Kunihiro Ukai, Hidenobu Wakita, Seiji Fujihara | 2007-04-10 |
| 7195657 | Hydrogen generation system and fuel cell system having the same | Kunihiro Ukai, Hidenobu Wakita, Seiji Fujihara, Akira Maenishi | 2007-03-27 |
| 7147680 | Hydrogen purification apparatus and method and fuel cell power generation system and method | Kunihiro Ukai, Seiji Fujiwara, Takeshi Tomizawa, Hidenobu Wakita | 2006-12-12 |
| 7132178 | Hydrogen generator, fuel cell system and control method of hydrogen generator | Kunihiro Ukai, Hidenobu Wakita, Seiji Fujiwara | 2006-11-07 |
| 6972119 | Apparatus for forming hydrogen | Takeshi Tomizawa, Kunihiro Ukai, Toshiyuki Shono, Koichiro KITAGAWA, Tetsuya Ueda +2 more | 2005-12-06 |
| 6852302 | Carbon monoxide removing apparatus and process for operating the same | Kunihiro Ukai, Takeshi Tomizawa, Akira Maenishi, Tetsuya Ueda | 2005-02-08 |
| 6846475 | Hydrogen refinement apparatus | Takeshi Tomizawa, Kunihiro Ukai, Toshiyuki Shono, Kouichiro Kitagawa | 2005-01-25 |
| 6797420 | Power generation device and operation method therefor | Kunihiro Ukai, Takeshi Tomizawa, Toshiyuki Shono, Koichiro KITAGAWA, Tomonori Asou +4 more | 2004-09-28 |
| 6733552 | Hydrogen generating apparatus | Takeshi Tomizawa, Kunihiro Ukai, Toshiyuki Shono, Kouichiro Kitagawa | 2004-05-11 |
| 6607703 | Hydrogen generator | Takeshi Tomizawa, Kunihiro Ukai, Toshiyuki Shono, Kouichiro Kitagawa | 2003-08-19 |
| 6590977 | Analog subscriber circuit | — | 2003-07-08 |
| 6573973 | System for inserting additional moving picture data into moving picture data that are being communicated between terminals | — | 2003-06-03 |
| 6562088 | Method for operating a hydrogen generating apparatus | Kunihiro Ukai, Kimiyasu Honda, Takeshi Tomizawa, Kouichiro Kitagawa, Toshiyuki Shono | 2003-05-13 |
| 6270336 | Catalytic combustion system and combustion control method | Tetsuo Terashima, Yoshitaka Kawasaki, Motohiro Suzuki, Jiro Suzuki | 2001-08-07 |
| 5780865 | Apparatus for detecting images of particulates in liquid | Ryosuke Miura, Kazuyuki Ito | 1998-07-14 |