Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10287523 | Coal deactivation processing device | Keiichi Nakagawa | 2019-05-14 |
| 10059896 | Inactivation treatment apparatus | Keiichi Nakagawa | 2018-08-28 |
| 9758741 | Coal deactivation processing device | Keiichi Nakagawa, Fumiaki Sato | 2017-09-12 |
| 9624558 | Blast-furnace blowing coal and method for producing same | Keiichi Nakagawa, Tsutomu Hamada, Masakazu Sakaguchi | 2017-04-18 |
| 9617491 | Coal deactivation treatment device | Takeshi Kaneko, Keiichi Nakagawa, Keiichi Sato, Junji Asahara | 2017-04-11 |
| 9617609 | Method for preparing blast furnace blow-in coal | Keiichi Nakagawa, Masakazu Sakaguchi, Tsutomu Hamada | 2017-04-11 |
| 9605225 | Method for preparing blast furnace blow-in coal | Keiichi Nakagawa, Masakazu Sakaguchi, Tsutomu Hamada | 2017-03-28 |
| 9556497 | Blast furnace | Keiichi Nakagawa, Tsutomu Hamada, Masakazu Sakaguchi | 2017-01-31 |
| 9528065 | Coal deactivation processing device and equipment for producing modified coal using same | Takeshi Kaneko, Kenji Atarashiya, Keiichi Nakagawa, Tsutomu Hamada | 2016-12-27 |
| 9359569 | Method for deactivating coal | Keiichi Nakagawa, Junji Asahara | 2016-06-07 |
| 9290711 | Coal deactivation apparatus | Keiichi Sato, Keiji Tanizaki | 2016-03-22 |
| 9238827 | Biomass hydrothermal decomposition apparatus and method | Minoru Genta, Ryosuke Uehara, Kinya Fujita, Wataru Matsubara, Yoshio Seiki | 2016-01-19 |
| 9085739 | Method for gas treatment of coal | Keiichi Nakagawa, Keiji Tanizaki, Junji Asahara | 2015-07-21 |
| 8821695 | Coal reforming system | Fumiaki Sato, Makoto Susaki | 2014-09-02 |
| 8608910 | Coal reforming apparatus | Ryuji Yoshiyama | 2013-12-17 |
| 7387650 | Fuel cell power generation system and method for operating the same | Naohiko Ishibashi, Keiji Fujikawa, Hirohisa Yoshida, Masami Kondo, Shigeru Nojima +3 more | 2008-06-17 |
| 6436158 | Coal reforming process and apparatus therefor | Keiji Fujikawa, Hisao Yamaguchi | 2002-08-20 |
| 5472278 | Stirring apparatus having blades creating a circulating flow | Takayoshi Kawaoka, Hiroaki Ogasawara, Kenichiro Nakamura, Takafumi Shimada | 1995-12-05 |
| 5145255 | Stirring apparatus and stirring tower type apparatus for polmerization reactions | Takafumi Shimada, Hiroaki Ogasawara, Hidetaro Mori, Kazuto Kobayashi, Takao Yamazaki | 1992-09-08 |
| 4683210 | Method for measuring concentrations of CaCO.sub.3 and CaSO.sub.3 in a slurry | Masakazu Onizuka, Atsushi Tatani, Takayoshi Hamada | 1987-07-28 |
| 4675167 | Method of treating exhaust gases | Naoharu Shinoda, Atsushi Tatani, Masakazu Onizuka, Susumu Okino | 1987-06-23 |
| 4618482 | Method for controlling a concentration of slurry in wet flue gas desulfurization apparatus | Naoharu Shinoda, Atsushi Tatani, Susumu Okino, Taku Shimizu | 1986-10-21 |