Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9863195 | Passive pressure and load balancing bearing | Richard David Peer, Bastiaan Liezenberg | 2018-01-09 |
| 8820747 | Multiple sealing element assembly | Alberto Zubia, Trung Leduc, Robert J. Costo, Jr. | 2014-09-02 |
| 8381816 | Flushing procedure for rotating control device | Trung Leduc, Alberto Zubia, Robert J. Costo, Jr. | 2013-02-26 |
| 8118104 | Downhole valve with pass through ID | Robert J. Costo, Jr., Richard David Peer | 2012-02-21 |