Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5879618 | Apparatus for treating fine ore | Ernst Oberndorfer, Rudolf Weidinger, Roy Hubert Whipp, Jr. | 1999-03-09 |
| 5676734 | Method of treating fine ore | Ernst Oberndorfer, Rudolf Weidinger, Roy Hubert Whipp, Jr. | 1997-10-14 |
| 5554206 | Method of charging ore | Karl Czermak, Konstantin Milionis, Roy Hubert Whipp, Jr. | 1996-09-10 |
| 5505903 | Method of producing cold-moulded iron-containing briquettes | Gunter Schrey, Karl Katzensteiner, Klaus Kopper | 1996-04-09 |
| 5435832 | Process for utilising iron-containing wastes or residues | Leopold Werner Kepplinger, Gunter Schrey | 1995-07-25 |
| 4741837 | Process for drying brown coal of high water content | Michael Schweizer, Jaroslav Fohl | 1988-05-03 |
| 4628619 | Drying plant for brown coals of high water content | Alois Janusch, Franz W. Mayer | 1986-12-16 |