Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882020 | Process for treating effluent gas | Akihiko Maezawa, Yoshio Nakajima, Shinji Aoki | 1989-11-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882020 | Process for treating effluent gas | Akihiko Maezawa, Yoshio Nakajima, Shinji Aoki | 1989-11-21 |