Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9038729 | Adaptor flange for rotary control device | Sudar Chellappa | 2015-05-26 |
| 8820747 | Multiple sealing element assembly | Alberto Zubia, Huward Paul Fontenot, Jr., Robert J. Costo, Jr. | 2014-09-02 |
| 8381816 | Flushing procedure for rotating control device | Huward Paul Fontenot, Jr., Alberto Zubia, Robert J. Costo, Jr. | 2013-02-26 |
| 7950474 | Dual stripper rubber cartridge with leak detection | Russell Lee Lewis | 2011-05-31 |
| 7802635 | Dual stripper rubber cartridge with leak detection | Russell Lee Lewis | 2010-09-28 |
| 5535938 | Internal line up clamp | — | 1996-07-16 |
| 5356067 | Internal line up clamp | — | 1994-10-18 |