Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6301935 | Process for the manufacture of milled glass fibers | Raymond Audenaert, Alban Hennen, Josef Schmoll | 2001-10-16 |
| 4299634 | Process for the preparation of raw mix for the production of cement and sulphuric acid | Josef Hutter | 1981-11-10 |