Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9605502 | Method of handling a gas influx in a riser | Christian Leuchtenberg, Michael Chandra | 2017-03-28 |
| 5498648 | Paper size mixtures | Arnold De Clercq, Roland Ettl, Lothar Hoehr, Andreas Hohmann, Ulrich Riebeling | 1996-03-12 |
| 5182792 | Process of electric pipeline heating utilizing heating elements inserted in pipelines | — | 1993-01-26 |
| 5125847 | Coupling device for pipeline heating system | — | 1992-06-30 |