Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5816748 | Method for sealing off ground sites | Klaus Kleiser, Hans-Joachim Bayer, Jorg Ganger, Klaus-Dieter Bilkenroth, Ortwin Caldonazzi +2 more | 1998-10-06 |
| 5405225 | Method of sanitizing a polluted area, particularly an unregulated contaminant-containing refuse dump | Klaus-Dieter Bilkenroth, Ortwin Caldonazzi, Manfred Heilmann, Hans-Jurgen Kretzschmar, Peter Czolbe | 1995-04-11 |