Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873366 | Process for producing 2,6-naphthalenedicarboxylic acid | Atsushi Sasakawa, Shoichiro Hayashi, Yutaka Konai | 1989-10-10 |
| 4870833 | Car air conditioning apparatus and controlling method therefor | Yoshinao Okumoto | 1989-10-03 |