Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10508523 | Using liquefied petroleum gas in a hot circulating fluid heater for in-situ oil shale retorting | Alan K. Burnham | 2019-12-17 |
| 9464513 | System for providing uniform heating to subterranean formation for recovery of mineral deposits | Leonard H. Switzer, Alan K. Burnham, Roger L. Day | 2016-10-11 |
| 9127541 | Heater and method for recovering hydrocarbons from underground deposits | Alan K. Burnham, P. Henrik Wallman, Roger L. Day | 2015-09-08 |
| 8464792 | Conduction convection reflux retorting process | Alan K. Burnham, Roger L. Day, P. Henrick Wallman | 2013-06-18 |
| 8162043 | In situ method and system for extraction of oil from shale | Alan K. Burnham, Roger L. Day, P. Henrick Wallman | 2012-04-24 |
| 7921907 | In situ method and system for extraction of oil from shale | Alan K. Burnham, Roger L. Day, P. Henrick Wallman, Harry Gordon Harris, Paul Lerwick +1 more | 2011-04-12 |
| 6582588 | High temperature, low oxidation stabilization of pitch fibers | Andrea Zimmerman, John A. Rodgers, H. Ernest Romine, Lorita Davis | 2003-06-24 |
| 6270652 | Organometallic containing mesophase pitches for spinning into pitch carbon fibers | H. Ernest Romine, John A. Rodgers | 2001-08-07 |
| 6123829 | High temperature, low oxidation stabilization of pitch fibers | Andrea Zimmerman, John A. Rodgers, H. Ernest Romine, Lorita Davis | 2000-09-26 |
| 5932186 | Organometallic containing mesophase pitches for spinning into pitch carbon fibers | H. Ernest Romine, John A. Rodgers | 1999-08-03 |
| 5720871 | Organometallic containing mesophase pitches for spinning into pitch carbon fibers | H. Ernest Romine, John A. Rodgers | 1998-02-24 |
| 5032250 | Process for isolating mesophase pitch | Hugh E. Romine | 1991-07-16 |
| 4718984 | Apparatus for calcining coke | Charles J. Swartz | 1988-01-12 |
| 4698147 | Short residence time hydrogen donor diluent cracking process | — | 1987-10-06 |
| 4604185 | Co-processing of straight run vacuum resid and cracked residua | Ardis L. Anderson | 1986-08-05 |
| 4601812 | Oil shale retorting process | Ardis L. Anderson | 1986-07-22 |
| 4347120 | Upgrading of heavy hydrocarbons | Ardis L. Anderson | 1982-08-31 |
| 4332641 | Process for producing calcined coke and rich synthesis gas | Ardis L. Anderson | 1982-06-01 |
| 4235703 | Method for producing premium coke from residual oil | William H. Kegler | 1980-11-25 |