Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10011563 | Lithium styrene sulfonate | Chikara Shiraishi | 2018-07-03 |
| 5695728 | Method for removal of nitrogen oxides | Hiroshi Miura, Hidekazu Aoyama, Kazuhiko Sekizawa | 1997-12-09 |
| 5514355 | Method for purifying an oxygen-rich exhaust gas | Akinori Eshita | 1996-05-07 |
| 5449504 | Process for removing nitrogen oxides from oxygen rich exhaust gas | Shunji Inoue, Kazuo Sekitani, Kazuhiko Sekizawa, Hiroshi Miura, Hironobu Hosose +1 more | 1995-09-12 |
| 5443803 | Catalyst for purifying exhaust gas | Tatsuji Mizuno, Shinichi Takeshima, Kazuhiko Sekizawa | 1995-08-22 |
| 5433933 | Method of purifying oxygen-excess exhaust gas | Akinori Eshita, Shinichi Matsumoto, Kazunobu Ishibashi, Koji Yokota, Shiroh Kondoh | 1995-07-18 |
| 5427753 | Process for removing nitrogen oxides from oxygen rich exhaust gas | Hiroshi Miura, Hidekazu Aoyama, Kazuhiko Sekizawa, Shoji Adachi | 1995-06-27 |
| 5374409 | Purifying gases with an alkali metal and transition metal containing zeolite | Shuji Okazaki, Kazuhiko Sekizawa | 1994-12-20 |
| 5270024 | Process for reducing nitrogen oxides from exhaust gas | Katsumi Kamiyama, Kazushige Igawa, Shinichi Matsumoto, Masayuki Fukui, Tadashi Suzuki +5 more | 1993-12-14 |
| 5236879 | Catalyst for purifying exhaust gas | Shunji Inoue, Kazuhiko Sekizawa | 1993-08-17 |
| 5223236 | Method for exhaust gas cleaning | Shunji Inoue, Akinori Eshita, Masao Nakano | 1993-06-29 |
| 4957719 | Process for preparation of synthetic mazzite | Toshiyuki Taga | 1990-09-18 |