Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4318680 | Spinnerette plate having multiple capillaries per counterbore for melt spinning fusion melts of acrylonitrile polymer and water | Ronald E. Pfeiffer | 1982-03-09 |
| 4254076 | Melt-spinning acrylonitrile polymer fiber using spinnerette plate with multiple capillaries per counterbore | Ronald E. Pfeiffer | 1981-03-03 |
| 4220617 | Process for melt-spinning acrylonitrile polymer fiber | Ronald E. Pfeiffer | 1980-09-02 |