Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4843170 | Process for producing vinyl acetate | Tomiya Isshiki, Yasuhiko Kijima, Kenji Ishii | 1989-06-27 |
| 4829460 | Barrel shifter | — | 1989-05-09 |
AI
Akira Ito
Mitsubishi Gas Chemical Company: 1 patents #15 of 67Top 25%
Overall (1989): #31,706 of 140,708Top 25%
2
Patents 1989