Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 12084949 | Intervention system and method using well slot path selector valve | Peter Welsh, Lee Mainprize | 2024-09-10 | |
| 6817418 | Subsea completion annulus monitoring and bleed down system | Nicholas Gatherar, Alasdair MacFarlane | 2004-11-16 | $4,627,000 |
| 6516875 | Tubing hanger lockdown mechanism | Richard Kent, Alasdair MacFarlane | 2003-02-11 | $5,124,000 |
| 6345668 | Tubing hanger having an integral valve gate | — | 2002-02-12 | $5,960,000 |
| 5839512 | Adjustable casing hanger with contractible load shoulder and metal sealing ratch latch adjustment sub | Steven Robert Malone, Sean McAvoy | 1998-11-24 | $2,915,000 |
| 4986359 | Release apparatus and method for threaded conductor pipe | Stephen A. Cromar | 1991-01-22 |