Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10017903 | Industrial mats having side protection | Joe PENLAND, JR., Rustin B. Penland, Scott Calvert | 2018-07-10 |
| 9909708 | Preventing disturbances of underground conduit | Joe PENLAND, JR., Scott Calvert | 2018-03-06 |
| 9822493 | Industrial mats having side protection | Joe PENLAND, JR., Rustin B. Penland, Scott Calvert | 2017-11-21 |
| 9663902 | Environmentally resistant encapsulated mat construction | Joe PENLAND, JR., Rustin B. Penland, Scott Calvert | 2017-05-30 |
| 9486976 | Mat construction having environmentally resistant skin | Joe PENLAND, JR., Rustin B. Penland, Scott Calvert | 2016-11-08 |
| 9476164 | Industrial mat having side bumpers and lifting elements | Joe PENLAND, JR., Rustin B. Penland, Scott Calvert | 2016-10-25 |
| 9447547 | Mat construction with environmentally resistant core | Joe PENLAND, JR., Rustin B. Penland, Scott Calvert | 2016-09-20 |
| 9315949 | Mat construction with environmentally resistant core | Joe PENLAND, JR., Rustin B. Penland, Scott Calvert | 2016-04-19 |
| 9315951 | Mat construction having environmentally resistant skin | Joe PENLAND, JR., Rustin B. Penland, Scott Calvert | 2016-04-19 |
| 8377165 | Recovery of elements from hydrothermal products | — | 2013-02-19 |
| 8186430 | Method and system for extraction of hydrocarbons from oil sands | — | 2012-05-29 |
| 7980304 | Method and system for extraction of hydrocarbons from oil shale | — | 2011-07-19 |
| 7931080 | Method and system for extraction of hydrocarbons from oil sands | — | 2011-04-26 |
| 7445041 | Method and system for extraction of hydrocarbons from oil shale | — | 2008-11-04 |
| 5099764 | Propulsion unit fireable from an enclosure | Malcolm K. Dale, David L. Wilson, Christopher Rinaldi | 1992-03-31 |
| 4481973 | Differential pressure energized circulating valve | Edwin Thomas | 1984-11-13 |
| 4427070 | Circulating and pressure equalizing sub | — | 1984-01-24 |