Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8043478 | Retort heating apparatus | Byron G. Merrell, Michael Keller | 2011-10-25 |
| 7718038 | Retort heating method | Byron G. Merrell, Michael Keller | 2010-05-18 |
| 7264694 | Retort heating apparatus and methods | Byron G. Merrell, Michael Keller | 2007-09-04 |
| 7229547 | Retort heating systems and methods of use | Byron G. Merrell, Michael Keller | 2007-06-12 |
| 6951248 | Method of separating oil from geological formations | Lawrence Conaway, Michael Keller, David Caffey | 2005-10-04 |
| 6840760 | Gas-assisted flare burner | Michael Keller, John A. Simmer | 2005-01-11 |
| 6576145 | Method of separating hydrocarbons from mineral substrates | Lawrence Conaway, Michael Keller, David Caffey | 2003-06-10 |
| 5195884 | Low NO.sub.x formation burner apparatus and methods | Robert E. Schwartz, Samuel O. Napier, Andrew Paul Jones | 1993-03-23 |
| 4975042 | Method and burner apparatus for flaring inert vitiated waste gases | Robert E. Schwartz | 1990-12-04 |
| 4952137 | Flare gas burner | Robert E. Schwartz, Michael Keller | 1990-08-28 |
| 4900244 | Gas flaring method and apparatus | Michael Keller, Dale W. Pressnall | 1990-02-13 |
| 4664617 | Method and burner apparatus for flaring inert vitiated waste gases | Robert E. Schwartz | 1987-05-12 |
| 4645449 | Methods and apparatus for burning fuel with low nox formation | Robert E. Schwartz | 1987-02-24 |
| 4637793 | Flare gas burner | Robert E. Schwartz, Michael Keller | 1987-01-20 |
| 4604048 | Methods and apparatus for burning fuel with low NO.sub.x formation | Robert E. Schwartz | 1986-08-05 |
| 4579521 | Flare gas burner | Robert E. Schwartz, Michael Keller | 1986-04-01 |
| 4573906 | Shielded smoke suppressing flare gas burner | Robert E. Schwartz, Michael Keller | 1986-03-04 |
| 4457696 | Large capacity air-powered smokeless flare | Robert E. Schwartz, Michael Keller | 1984-07-03 |