Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7891420 | Wellbore apparatus and method for completion, production and injection | Charles S. Yeh | 2011-02-22 |
| 7870898 | Well flow control systems and methods | Charles S. Yeh, John W. Mohr, Scott R. Clingman | 2011-01-18 |