Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8622398 | Annular seal | Kendall E. Keene | 2014-01-07 |
| 8235396 | Annular seal | Kendall E. Keene | 2012-08-07 |
| 7740248 | Annular seal | Kendall E. Keene | 2010-06-22 |
| 7121346 | Intervention spool for subsea use | Danny K. Wolff, William M. Taylor, Mark Carter | 2006-10-17 |
| 7070001 | Expandable sealing apparatus | Ken Whanger, Christopher Cuffe, Clayton Plucheck, Patrick Maguire | 2006-07-04 |
| 6926283 | Metal-to-metal sealing system | Dwight D. Janoff, Gregory L. Glidden, Neil Crawford | 2005-08-09 |
| 6907937 | Expandable sealing apparatus | Ken Whanger, Christopher Cuffe, Clayton Plucheck, Patrick Maguire | 2005-06-21 |
| 6869080 | Metal-to-metal sealing system | Dwight D. Janoff, Gregory L. Glidden, Neil Crawford | 2005-03-22 |
| 6564011 | Self-regulating heat source for subsea equipment | Dwight D. Janoff | 2003-05-13 |
| 6561521 | Metal-to-metal seal with soft metal insert | Dwight D. Janoff, Gregory L. Glidden, Neil Crawford | 2003-05-13 |
| 6520261 | Thermal insulation material for subsea equipment | Dwight D. Janoff | 2003-02-18 |
| 6415868 | Method and apparatus for preventing the formation of alkane hydrates in subsea equipment | Dwight D. Janoff | 2002-07-09 |
| 5791657 | Seals containing composite non-extrusion springs | David Cain, Andrew C. Posluszny, Rudolf R. Schoen, Jerald L. Smith, Robert Keith Stoddard, Jr. +3 more | 1998-08-11 |
| 5762089 | Hardface coating for seal surfaces in a gate valve | Sue F. Haeberle, Christi Hambrick, Jack Havens, Manuel N. Maligas, Brian Swagerty | 1998-06-09 |
| 5740863 | Subsea wellhead mechanical erosion detector | Charles R. Ortloff, Thomas Dorsch, Lee A. Gillette, Michael R. Williams | 1998-04-21 |
| 5180008 | Wellhead seal for wide temperature and pressure ranges | Tod Aldridge, John A. Fitzgerald, Allan K. McGregor, Ronald D. Quates, Rudolf R. Schoen +1 more | 1993-01-19 |
| 5031695 | Well casing hanger with wide temperature range seal | David Cain, Ronald W. Henley, Kevin P. Long, Tep Ungchusri | 1991-07-16 |
| 4848777 | Pressure energized/pressure intensified casing seal | David Zollo, Roy W. Benefield, David Cain, Phillip F. Huang, Brenda K. Montemayor +3 more | 1989-07-18 |
| 4567211 | Naphthalenic derivatized plasticizers for polyphosphazene polymers | Arthur E. Oberster | 1986-01-28 |
| 4553730 | Ram-type blowout preventer and packer therefor | — | 1985-11-19 |
| 4518144 | Ram-type blowout preventer and packer therefor | Carl A. La Velle, Joe P. Parris | 1985-05-21 |