Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4407715 | Method of and apparatus for the flotation processing of minerals | Alexey D. Sheludko, Rumen V. Ivanov, Ivan M. Nishkov | 1983-10-04 |
| 4279742 | Method of and apparatus for the flotation of mineral raw materials | Rumen V. Ivanov, Ulrich Bilsing, Heinz Weber, Manfred Schmidt | 1981-07-21 |