Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864062 | Process for producing dioctamethylene triamine | Masao Saito | 1989-09-05 |
| 4823750 | Automotive engine idle speed control device | Chiaki Niida, Tomoo Ito, Torazo Nishimiya, Takashi Iseyama | 1989-04-25 |