Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887957 | Nozzle for melt spinning of pitch and method for spinning pitch | Masaaki Itoi | 1989-12-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887957 | Nozzle for melt spinning of pitch and method for spinning pitch | Masaaki Itoi | 1989-12-19 |