Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6244258 | EGR controller for cylinder cut-off engine | Eitetsu Akiyama, Toshiyuki Suzuki, Ryuji Kohno | 2001-06-12 |
| 6138636 | Apparatus for controlling multi-cylinder internal combustion engine with partial cylinder switching-off mechanism | Ryuji Kohno, Toshiyuki Suzuki, Eitetsu Akiyama | 2000-10-31 |
| 5800797 | Process for producing alumina and apparatus therefor | Hiroshi Matsumoto, Hiroki Arao | 1998-09-01 |
| 5649421 | Exhaust emission control device | Mitsuo Wakabayashi, Shinichi Kikuchi, Shouji Inose | 1997-07-22 |
| 5194411 | Catalyst compositions and process for making the same | Tatsuo Masuda, Masahiro Nishi | 1993-03-16 |
| 5087430 | Process for purifying exhaust gas | Masayuki Hanada, Takeo Koshikawa, Akihiro Yamauchi, Hiroshi Ogura | 1992-02-11 |
| 4952381 | Method for denitrizing nitrogen oxides contained in waste gas | Horiaki Rikimaru, Tadao Nakatsuji, Toshikatsu Umaba, Kazuhiko Nagano, Kazuya Mishina +11 more | 1990-08-28 |
| 4952545 | Process for removing nitrogen oxides from exhaust gases | Makoto Imanari, Takeo Koshikawa, Akihiro Yamauchi, Masayuki Hanada, Kiyoshi Nagano | 1990-08-28 |
| 4891348 | Catalyst for removing nitrogen oxides in exhaust gases | Makoto Imanari, Takeo Koshikawa, Akihiro Yamauchi, Masayuki Hanada, Kiyoshi Nagano | 1990-01-02 |
| 4869735 | Adsorbent for arsenic compound and method for removing arsenic compound from combustion gas | Masaki Miyazawa, Norihisa Kobayashi, Hiromu Takatsuka, Atsushi Morii, Toshio Koyanagi +9 more | 1989-09-26 |
| 4855115 | Process for removing nitrogen oxides from exhaust gases | Makoto Imanari, Takeo Koshikawa, Akihiro Yamauchi, Masayuki Hanada, Kiyoshi Nagano | 1989-08-08 |
| 4833113 | Denitration catalyst for reducing nitrogen oxides in exhaust gas | Makoto Imanari, Takeo Koshikawa, Akihiro Yamauchi, Masayuki Hanada, Kiyoshi Nagano | 1989-05-23 |
| 4802840 | Die for molding honeycomb structures | Masayuki Hanada, Hideo Inutsuka, Katsuya Ogata | 1989-02-07 |