Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814121 | Method for spinning a petroleum-origin mesophase | — | 1989-03-21 |
| 4814540 | Process for producing propylene oligomers | Masahiko Kuramoto | 1989-03-21 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814121 | Method for spinning a petroleum-origin mesophase | — | 1989-03-21 |
| 4814540 | Process for producing propylene oligomers | Masahiko Kuramoto | 1989-03-21 |