Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9482054 | Hole enlargement drilling device and methods for using same | Matthias Meister, Wolfgang E. Herberg, Joachim Treviranus, Carsten Freyer, Hans Oppelaar | 2016-11-01 |
| 9273546 | Apparatus and method for protecting devices downhole | Ansgar Cartellieri, Christopher Jakubeit, Detlev Benedict | 2016-03-01 |
| 8627893 | Apparatus and method for selective flow control | Alexander Otto | 2014-01-14 |
| 7416023 | Formation pressure testing apparatus with flexible member and method of formation pressure testing | Sven Krueger, Volker Krueger, Wolfgang E. Herberg, Matthias Meister | 2008-08-26 |
| 6837314 | Sub apparatus with exchangeable modules and associated method | Volker Krueger, Wolfgang E. Herberg, Matthias Meister, Sven Krueger | 2005-01-04 |