Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5914075 | Process for preparation of alkali metal cyanide granulates | Herbert Riemenschneider, Christian Alt, Martina Claus, Josef Leutner, Heinz Moench +2 more | 1999-06-22 |
| 5336474 | Process for leaching of precious metals | Manfred Diehl, Karl-Heinz Koenig, Eckhart Krone, Norbert Steiner, Jochen Ullmann +1 more | 1994-08-09 |
| 5275791 | Process for the leaching of gold and silver with cyanidic leaching solution and controlled addition of hydrogen peroxide | Helmut Knorre, Andrew Griffiths, Joachim Fischer | 1994-01-04 |
| 5250272 | Process for leaching precious metals with hydrogen-peroxide and a cyanide leaching solution | Helmut Knorre, Steven Gos, Mathias Stoll, Annette Ziegler | 1993-10-05 |