Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6763884 | Method for cleaning and sealing a well borehole portion for formation evaluation | Wolfgang E. Herberg, Sven Krueger | 2004-07-20 |
| 6672386 | Method for in-situ analysis of formation parameters | Sven Krueger, Eick Niemeyer | 2004-01-06 |
| 6640908 | Apparatus and method for formation testing while drilling with minimum system volume | Stanley C. Jones, John M. Michaels, Jaedong Lee, Volker Krueger | 2003-11-04 |
| 6609568 | Closed-loop drawdown apparatus and method for in-situ analysis of formation fluids | Volker Krueger, John M. Michaels, Jaedong Lee, Stanley C. Jones | 2003-08-26 |
| 6585045 | Formation testing while drilling apparatus with axially and spirally mounted ports | Jaedong Lee, John M. Michaels, Volker Krueger, Per-Erik Berger | 2003-07-01 |
| 6581455 | Modified formation testing apparatus with borehole grippers and method of formation testing | Per-Erik Berger, Volker Krueger, John M. Michaels, Jaedong Lee | 2003-06-24 |
| 6568487 | Method for fast and extensive formation evaluation using minimum system volume | Sven Krueger | 2003-05-27 |
| 6478096 | Apparatus and method for formation testing while drilling with minimum system volume | Stanley C. Jones, John M. Michaels, Jaedong Lee, Volker Krueger | 2002-11-12 |
| 6427530 | Apparatus and method for formation testing while drilling using combined absolute and differential pressure measurement | Volker Krueger, Per-Erik Berger | 2002-08-06 |
| 6332503 | Fixed cutter bit with chisel or vertical cutting elements | Rudolf Carl Pessier, Danny E. Scott, Ronny D. McCormick | 2001-12-25 |
| 6200514 | Process of making a bit body and mold therefor | — | 2001-03-13 |