Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887957 | Nozzle for melt spinning of pitch and method for spinning pitch | Masakatsu Ohta | 1989-12-19 |
| 4816202 | Method of melt spinning pitch | — | 1989-03-28 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887957 | Nozzle for melt spinning of pitch and method for spinning pitch | Masakatsu Ohta | 1989-12-19 |
| 4816202 | Method of melt spinning pitch | — | 1989-03-28 |