Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6284211 | Exhaust gas cleaner and method for removing nitrogen oxides | Kiyohide Yoshida | 2001-09-04 |
| 6057259 | Exhaust gas cleaner and method for removing nitrogen oxides | Kiyohide Yoshida | 2000-05-02 |
| 5882607 | Exhaust gas cleaner and method for cleaning exhaust gas | Kiyohide Yoshida, Mika Saito, Naoko Irite, Akira Abe, Masataka Furuyama | 1999-03-16 |
| 5801117 | Comprising supported silver sulfate or silver chloride or silver with sulfuric acid | Kiyohide Yoshida | 1998-09-01 |
| 5780002 | Exhaust gas cleaner and method for cleaning exhaust gas | Kiyohide Yoshida, Mika Saito, Naoko Irite, Akira Abe, Masataka Furuyama | 1998-07-14 |
| 5772973 | Exhaust gas cleaner and method for removing nitrogen oxides | Kiyohide Yoshida, Akira Abe, Naoko Irite | 1998-06-30 |
| 5714432 | Exhaust gas cleaner comprising supported silver or silver oxide particles | Kiyohide Yoshida, Akira Abe, Naoko Irite | 1998-02-03 |
| 5656249 | Exhaust gas cleaner and method for removing nitrogen oxides | Kiyohide Yoshida, Akira Abe, Naoko Irite | 1997-08-12 |
| 5534237 | Method of cleaning an exhaust gas and exhaust gas cleaner therefor | Kiyohide Yoshida, Gyo Muramatsu, Akira Abe | 1996-07-09 |