Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4347671 | Vacuum-drying method and apparatus | Francisco J. Dias, Willi Hannen, Peter Pflaum | 1982-09-07 |
| 4314599 | Process for making a starting material for the manufacture of artificial graphite articles | Francisco J. Dias | 1982-02-09 |