Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7234517 | System and method for sensing load on a downhole tool | Steven G. Streich, Roger L. Schultz, James C. Tucker, Phillip M. Starr | 2007-06-26 |
| 7048066 | Downhole sealing tools and method of use | Paul D. Ringgenberg, Gregory W. Vargus, Donald R. Smith, Ronald L. Hinkie, Don S. Folds | 2006-05-23 |
| 6966386 | Downhole sealing tools and method of use | Paul D. Ringgenberg, Gregory W. Vargus, Donald R. Smith, Ronald L. Hinkie, Don S. Folds | 2005-11-22 |
| 6666266 | Screw-driven wellhead isolation tool | Phillip M. Starr, Don S. Folds | 2003-12-23 |
| 6491116 | Frac plug with caged ball | Kevin T. Berscheidt, Donald R. Smith, Don S. Folds, Gregory W. Vargus | 2002-12-10 |
| 6481497 | High temperature high pressure retrievable packer with barrel slip | Loren Swor, Donald W. Winslow, Kenneth G. Neal, Phillip M. Starr | 2002-11-19 |
| 6394180 | Frac plug with caged ball | Kevin T. Berscheidt, Donald R. Smith, Don S. Folds, Gregory W. Vargus | 2002-05-28 |
| 6378606 | High temperature high pressure retrievable packer with barrel slip | Loren Swor, Donald W. Winslow, Kenneth G. Neal, Phillip M. Starr | 2002-04-30 |
| 6318460 | Retrievable high pressure, high temperature packer apparatus with anti-extrusion system and method | Loren Swor, Donald W. Winslow | 2001-11-20 |
| 6102117 | Retrievable high pressure, high temperature packer apparatus with anti-extrusion system | Loren Swor, Donald W. Winslow | 2000-08-15 |
| 5400855 | Casing inflation packer | Eugene E. Baker, Richard L. Giroux, John T. Brandell | 1995-03-28 |
| 5394941 | Fracture oriented completion tool system | James J. Venditto, David D. Szarka | 1995-03-07 |
| 5381862 | Coiled tubing operated full opening completion tool system | David D. Szarka | 1995-01-17 |
| 5348089 | Method and apparatus for the multiple stage cementing of a casing string in a well | John T. Brandell, Alan B. Duell | 1994-09-20 |
| 5314015 | Stage cementer and inflation packer apparatus | Steven G. Streich, John T. Brandell, Richard L. Giroux | 1994-05-24 |
| 5109925 | Multiple stage inflation packer with secondary opening rupture disc | Richard L. Giroux, Joseph B. Crump, Jerome F. Borges | 1992-05-05 |
| 4712619 | Poppet valve | Richard L. Giroux | 1987-12-15 |
| 4683955 | Automatic fill-up floating apparatus | Morris G. Baldridge, Harold O. Treece | 1987-08-04 |
| 4664188 | Retrievable well packer | Gary D. Zunkel, Michael L. Bolin | 1987-05-12 |
| 4606408 | Method and apparatus for gravel-packing a well | Gary D. Zunkel, David D. Szarka | 1986-08-19 |
| 4583593 | Hydraulically activated liner setting device | Gary D. Zunkel | 1986-04-22 |
| 4418754 | Method and apparatus for gravel packing a zone in a well | — | 1983-12-06 |