Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8037949 | Pipe running tool | Daniel Juhasz, George I. Boyadjieff, Brian L. Eidem, Hans van Rijzingen, Herman M. Kamphorst +1 more | 2011-10-18 |
| 7753138 | Pipe running tool having internal gripper | Daniel Juhasz, George I. Boyadjieff, Brian L. Eidem, Hans van Rijzingen, Herman M. Kamphorst +3 more | 2010-07-13 |
| 7699121 | Pipe running tool having a primary load path | Daniel Juhasz, George I. Boyadjieff, Brian L. Eidem, Hans van Rijzingen, Herman M. Kamphorst +3 more | 2010-04-20 |
| 7591304 | Pipe running tool having wireless telemetry | Daniel Juhasz, George I. Boyadjieff, Brian L. Eidem, Hans van Rijzingen, Herman M. Kamphorst +2 more | 2009-09-22 |
| 7510006 | Pipe running tool having a cement path | Daniel Juhasz, George I. Boyadjieff, Brian L. Eidem, Hans van Rijzingen, Herman M. Kamphorst +3 more | 2009-03-31 |
| 7347282 | Steerable soil penetration system | Michael John Betts, Josef Guillaume Christoffel Coenen, Pieter Karel Anton Kapteijn, Peter Oosterling, Paul Dirk Schilte +1 more | 2008-03-25 |
| 6527493 | Handling of tube sections in a rig for subsoil drilling | Herman M. Kamphorst, Dietrich Böttger | 2003-03-04 |
| 6435280 | Making and breaking of couplings between pipe sections in a drilling rig | Thomas Walburgis Bakker | 2002-08-20 |
| 4967706 | Internal-combustion engine of the injection type, and plate intended for fitting between the inlet ports of a cylinder block of such an engine and an inlet tube | Arie Van Der Ploeg, Gerrit J. Beunk, Juergen Henke, Erwin Spinner, Peter Frueh | 1990-11-06 |
| 4834053 | Internal combustion engine | Arie Van Der Ploeg, Benjamin C. W. Dull | 1989-05-30 |