| 10094188 |
Casing hanger and running tool system |
— |
2018-10-09 |
| 8950485 |
Drilling/frac adapter and method of use |
Danny R. Wilkins, Thomas Henry Holtkamp |
2015-02-10 |
| 8528650 |
Mandrel casing hanger and running tool system |
Martin Anthony Trumbull |
2013-09-10 |
| 7350246 |
Bathroom leak damage prevention apparatus |
Jennifer Smith |
2008-04-01 |
| 6484382 |
Method of providing an internal circumferential shoulder in a cylindrical passageway |
— |
2002-11-26 |
| 6176310 |
Assembly for sealing the annulus between concentric cylindrical surfaces |
Floyd J. Lane |
2001-01-23 |
| 5424224 |
Method of surface protection of a semiconductor wafer during polishing |
Franklin L. Allen, Eugene C. Davis, Lawrence D. Dyer, Jerry B. Medders, Vikki S. Simpson +2 more |
1995-06-13 |
| 5325925 |
Sealing method and apparatus for wellheads |
Philip Huang |
1994-07-05 |
| 5229306 |
Backside gettering method employing a monocrystalline germanium-silicon layer |
Keith Lindberg, Greg Gopffarth |
1993-07-20 |
| 5000266 |
Hydraulic/torsion packoff installation tool |
Brian Saunders |
1991-03-19 |
| 4923006 |
Insulating support for tubing string |
Michael Hartmann |
1990-05-08 |
| 4869319 |
Wellhead structure |
Edward J. Szymozak, Thomas G. Cassity, William M. Taylor, Peer H. Tiemer, Larry M. Hoes +1 more |
1989-09-26 |
| 4828293 |
Wellhead slip and seal assembly |
Delbert Edwin Vanderford |
1989-05-09 |
| 4825945 |
Wellhead valve |
— |
1989-05-02 |
| 4766956 |
Wellhead annular seal |
Edward J. Szymczak |
1988-08-30 |
| 4590943 |
System for providing power to portable defibrillator |
Mike M. Paull, Kathleen D. Schoenberg |
1986-05-27 |
| 4515400 |
Wellhead assembly |
Edward J. Szymczak |
1985-05-07 |
