Issued Patents All Time
Showing 1–8 of 8 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, Daniel S. Bangert, Mark F. Gravouia, Rizal Masingkan | 2022-10-18 |
| 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, Daniel S. Bangert, 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, Daniel S. Bangert, 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, Daniel S. Bangert, 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, Daniel S. Bangert, 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, Daniel S. Bangert, 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, Daniel S. Bangert, 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, Daniel S. Bangert, Mark F. Gravouia, Rizal Masingkan | 2012-12-18 |