Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8061419 | Casing head slip lock connection for high temperature service | Irina Khazanovich | 2011-11-22 |
| 7918271 | Method and apparatus to provide electrical connection in a wellhead for a downhole electrical device | Irina Khazanovich, Nathan Kwasniewski | 2011-04-05 |
| 7552762 | Method and apparatus to provide electrical connection in a wellhead for a downhole electrical device | Irina Khazanovich, Nathan Kwasniewski | 2009-06-30 |
| 7410002 | Method and apparatus to provide electrical connection in a wellhead for a downhole electrical device | Irina Khazanovich, Nathan Kwasniewski | 2008-08-12 |
| 6595278 | Assembly for locking a polished rod in a pumping wellhead | Tony Lam, Irina Khazanovich | 2003-07-22 |
| 5799730 | Wellhead casing hanger assembly | Tony Lam, John Braben | 1998-09-01 |