Issued Patents All Time
Showing 1–25 of 46 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8493013 | Electric motor control algorithm with bypass relay | — | 2013-07-23 |
| 8128269 | Smoke environment personnel identification apparatus | — | 2012-03-06 |
| 8037949 | Pipe running tool | Daniel Juhasz, Brian L. Eidem, Hans van Rijzingen, Herman M. Kamphorst, Hans Joachim Dietrich Böttger +1 more | 2011-10-18 |
| 7911173 | Open loop method for controlling power | — | 2011-03-22 |
| 7768221 | Method, system, and apparatus for controlling an electric motor | John J. Hurst | 2010-08-03 |
| 7753138 | Pipe running tool having internal gripper | Daniel Juhasz, Brian L. Eidem, Hans van Rijzingen, Herman M. Kamphorst, Hans Joachim Dietrich Böttger +3 more | 2010-07-13 |
| 7699121 | Pipe running tool having a primary load path | Daniel Juhasz, Brian L. Eidem, Hans van Rijzingen, Herman M. Kamphorst, Hans Joachim Dietrich Böttger +3 more | 2010-04-20 |
| 7591304 | Pipe running tool having wireless telemetry | Daniel Juhasz, Brian L. Eidem, Hans van Rijzingen, Herman M. Kamphorst, Hans Joachim Dietrich Böttger +2 more | 2009-09-22 |
| 7510006 | Pipe running tool having a cement path | Daniel Juhasz, Brian L. Eidem, Hans van Rijzingen, Herman M. Kamphorst, Hans Joachim Dietrich Böttger +3 more | 2009-03-31 |
| 7225803 | Pavement saw and vacuum apparatus | — | 2007-06-05 |
| 7117944 | Drill pipe having an internally coated electrical pathway | — | 2006-10-10 |
| 7108081 | Instrumented internal blowout preventer valve for measuring drill string drilling parameters | — | 2006-09-19 |
| 7096977 | Pipe running tool | Daniel Juhasz, Brian L. Eidem, Hans van Rijzingen, Herman M. Kamphorst, Dieter Boettger +1 more | 2006-08-29 |
| 6938709 | Pipe running tool | Daniel Juhasz, Brian L. Eidem, Hans van Rijzingen, Herman M. Kamphorst, Dieter Boettger +1 more | 2005-09-06 |
| 6776070 | Iron roughneck | David Mason, Johannes Kamp, Ronaldus Roling | 2004-08-17 |
| 6763887 | Drill pipe having an internally coated electrical pathway | — | 2004-07-20 |
| 6691801 | Load compensator for a pipe running tool | Daniel Juhasz, Brian L. Eidem, Hans van Rijzingen | 2004-02-17 |
| 6637526 | Offset elevator for a pipe running tool and a method of using a pipe running tool | Daniel Juhasz, Brian L. Eidem, Hans van Rijzingen | 2003-10-28 |
| 6588501 | Method and apparatus to reduce hydrostatic pressure in sub sea risers using buoyant spheres | — | 2003-07-08 |
| 6443241 | Pipe running tool | Daniel Juhasz, Brian L. Eidem, Hans van Rijzingen | 2002-09-03 |
| 5451129 | Pipe transfer system | James D. Brugman, Preston R. Fox | 1995-09-19 |
| 4765401 | Apparatus for handling well pipe | — | 1988-08-23 |
| 4709766 | Well pipe handling machine | — | 1987-12-01 |
| 4696207 | Well pipe handling machine | — | 1987-09-29 |
| 4625796 | Well pipe stabbing and back-up apparatus | — | 1986-12-02 |