Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9816363 | Polysaccharide delivery unit for wellbore treatment agent and method | Sumitra Mukhopadhyay, Bernard Franklin, Eddie G. Bowen | 2017-11-14 |
| 8342240 | Method for providing a temporary barrier in a flow pathway | Bennett M. Richard, Paul McElfresh | 2013-01-01 |
| 7762342 | Apparatus for providing a temporary degradable barrier in a flow pathway | Bennett M. Richard, Paul McElfresh | 2010-07-27 |
| 7461699 | Method for providing a temporary barrier in a flow pathway | Bennett M. Richard, Paul McElfresh | 2008-12-09 |
| 7216709 | Hydraulic fracturing using non-ionic surfactant gelling agent | Paul McElfresh | 2007-05-15 |