Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9834404 | Method of making a downhole swellable seal with a passageway therethrough | Robert O. Castillo, Gregory C. Badke | 2017-12-05 |
| 7806193 | Swellable packer with back-up systems | Vel Berzin, Douglas J. Murray, Edward T. Wood, Steven N. Bailey, Robert O. Castillo | 2010-10-05 |
| 7478679 | Field assembled packer | Vel Berzin, Walter J. Laflin, Robert O. Castillo | 2009-01-20 |