Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12252198 | Modular pipe traversing apparatus | Karl Petter Wehlin, Bryan R. Duerfeldt, Jakob R. Salazar, Curtis Woods Belknap, Gail P. Murray | 2025-03-18 |
| 12038395 | Radiography inspection and fail-safe mechanism for pipe traversing robots | Bryan R. Duerfeldt, Karl Petter Wehlin, Dianna D. Liu | 2024-07-16 |
| 11826916 | Pipe traversing apparatus, sensing, and controls | Karl Petter Wehlin, Bryan R. Duerfeldt, Hassan Zargarzadeh, Dianna D. Liu | 2023-11-28 |
| 11754514 | Radiography inspection and fail-safe mechanism for pipe traversing robots | Bryan R. Duerfeldt, Karl Petter Wehlin, Dianna D. Liu | 2023-09-12 |
| 11154989 | Pipe traversing apparatus, sensing, and controls | Karl Petter Wehlin, Bryan R. Duerfeldt, Hassan Zargarzadeh, Dianna D. Liu | 2021-10-26 |
| 9828826 | Wellbore isolation system with communication lines | David S. Bishop, John E. Britt, Kim Tijerina, Kirby G. Schrader, Marc Samuelson +4 more | 2017-11-28 |