Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11473384 | Method and apparatus of hot tapping multiple coaxial or nested strings of underwater piping and/or tubing for overturned wells or platforms | Harry McGraw, Leslie M. Bland, Mark F. Gravouia, Rizal Masingkan | 2022-10-18 |
| 11131146 | Prevention of backflow during drilling and completion operations | James A. Smith | 2021-09-28 |
| 10851605 | Method and apparatus of hot tapping multiple coaxial or nested strings of underwater piping and/or tubing for overturned wells or platforms | Harry McGraw, Leslie M. Bland, Mark F. Gravouia, Rizal Masingkan | 2020-12-01 |
| 10253587 | Method and apparatus of hot tapping multiple coaxial or nested strings of underwater piping and/or tubing for overturned wells or platforms | Harry McGraw, Leslie M. Bland, Mark F. Gravouia, Rizal Masingkan | 2019-04-09 |
| 9851038 | Method and apparatus of hot tapping multiple coaxial or nested strings of underwater piping and/or tubing for overturned wells or platforms | Harry McGraw, Leslie M. Bland, Mark F. Gravouia, Rizal Masingkan | 2017-12-26 |
| 9194525 | Method and apparatus of hot tapping multiple coaxial or nested strings of underwater piping and/or tubing for overturned wells or platforms | Harry McGraw, Leslie M. Bland, Mark F. Gravouia, Rizal Masingkan | 2015-11-24 |
| 8707979 | Method and apparatus of hot tapping multiple coaxial or nested strings of underwater piping and/or tubing for overturned wells or platforms | Harry McGraw, Leslie M. Bland, Mark F. Gravouia, Rizal Masingkan | 2014-04-29 |
| 8622078 | Apparatus of hot tapping multiple coaxial or nested strings of underwater piping and/or tubing for overturned wells or platforms | Harry McGraw, Leslie M. Bland, Mark F. Gravouia, Rizal Masingkan | 2014-01-07 |
| 8333211 | Method and apparatus of hot tapping multiple coaxial or nested strings of underwater piping and/or tubing for overturned wells or platforms | Harry McGraw, Leslie M. Bland, Mark F. Gravouia, Rizal Masingkan | 2012-12-18 |
| 7631581 | Power tong positioner | — | 2009-12-15 |
| 7413398 | Power tong positioner | Clint Musemeche | 2008-08-19 |
| 7367402 | Blow-out preventor make/break tool | — | 2008-05-06 |
| 7036397 | Granular particle gripping surface | — | 2006-05-02 |
| 7017450 | Tong jaw and a method for constructing the tong jaw | — | 2006-03-28 |
| 6755097 | Granular particle gripping surface | — | 2004-06-29 |
| 6619160 | Sliding jaw adaptor for pivoting jaw power tong | David A. Buck | 2003-09-16 |
| 6386284 | Snubbing unit drilling system | David A. Buck | 2002-05-14 |
| 6378399 | Granular particle gripping surface | — | 2002-04-30 |
| 6223629 | Closed-head power tongs | — | 2001-05-01 |
| 5819605 | Low friction power tong jaw assembly | David A. Buck | 1998-10-13 |
| 5704427 | Portable well service rig | David A. Buck, Philip O'Connor | 1998-01-06 |
| 5353876 | Method and apparatus for sealing the juncture between a verticle well and one or more horizontal wells using mandrel means | Alfred R. Curington, L. Cameron White | 1994-10-11 |
| 5325924 | Method and apparatus for locating and re-entering one or more horizontal wells using mandrel means | Alfred R. Curington, L. Cameron White | 1994-07-05 |
| 5322127 | Method and apparatus for sealing the juncture between a vertical well and one or more horizontal wells | Robert J. McNair | 1994-06-21 |
| 5311936 | Method and apparatus for isolating one horizontal production zone in a multilateral well | Robert J. McNair, Mark W. Brockman, L. Cameron White, Jeffrey D. Cockrell, Alfred R. Curington | 1994-05-17 |