Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4748009 | Method of recovering vanadium from vanadium-containing materials with at least 6 wt % oxidic vanadium compounds | Reinhard Hahn, Siegfried Sattelberger, Hans-Joachim Retelsdorf | 1988-05-31 |
| 4643874 | Method of making a titanium-containing hydrogen storage alloy | Hans-Joachim Retelsdorf, Peter Kunert | 1987-02-17 |
| 4623386 | Carbothermal method of producing cobalt-boron and/or nickel-boron | Reinhard Hahn, Hans-Joachim Retelsdorf, Siegfried Sattelberger | 1986-11-18 |
| 4569691 | Method of making ferroboron and ferroborosilicon alloys and the alloys made by this method | Friedrich Breuer, Reinhard Hahn, Hans-Joachim Retelsdorf | 1986-02-11 |
| 4263046 | Sinterable mass for producing workpieces of alloy steel | Hans-Joachim Retelsdorf, Richard Jervis, Günter RADEL | 1981-04-21 |