Issued Patents All Time
Showing 26–26 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5955046 | Catalytic material for removing nitrogen oxides apparatus for treating nitrogen oxides using the material, and method of removing nitrogen oxides | Yasuyuki Okimura, Hitoshi Yokoi, Tadashi Hattori | 1999-09-21 |