Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865827 | Process for removing nitrogen oxides | Takahiro Tachi, Hiroshi Kawagoshi, Akira Kato, Hisao Yamashita, Tomoichi Kamo +2 more | 1989-09-12 |
| 4798813 | Catalyst for removing nitrogen oxide and process for producing the catalyst | Kunihiko Konishi, Toshiaki Matsuda, Meiji Ito, Taiji Kamiguchi, Nobue Teshima +1 more | 1989-01-17 |