Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861931 | Process for producing 5-alkylidenenorbornene | Ryuji Oashi, Yoshitaka Kawahara, Mikio Takeuchi | 1989-08-29 |
| 4800729 | Thermo-hygrostatic refrigerators | — | 1989-01-31 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861931 | Process for producing 5-alkylidenenorbornene | Ryuji Oashi, Yoshitaka Kawahara, Mikio Takeuchi | 1989-08-29 |
| 4800729 | Thermo-hygrostatic refrigerators | — | 1989-01-31 |