Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7464758 | Model HCCV hydrostatic closed circulation valve | Joseph C. H. Yeo, Anthony Orchard, Christopher L. Weaver | 2008-12-16 |
| 7373980 | Mono-trip cement thru completion | Anthony Orchard, Joseph C. H. Yeo, Jim H. Kritzler, Walter Chapman, James Holt | 2008-05-20 |
| 7228897 | Cement through side pocket mandrel | James Holt, Walter Chapman, James H. Kritzler, Jeffrey L. Osselburn | 2007-06-12 |
| 7069992 | Mono-trip cement thru completion | Anthony Orchard, Joseph C. H. Yeo, Jim H. Kritzler, Walter Chapman, James Holt | 2006-07-04 |
| 7063152 | Model HCCV hydrostatic closed circulation valve | Joseph C. H. Yeo, Anthony Orchard, Christopher L. Weaver | 2006-06-20 |