Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4858693 | Compositions and methods for reducing the permeability of underground strata | Mark S. Mitchell, Mojmir Sovak | 1989-08-22 |
| 4836285 | Composition and methods for reducing the permeability of underground strata | Mark S. Mitchell, Mojmir Sovak | 1989-06-06 |
| 4811787 | Method for reducing the permeability of underground strata during secondary recovery of oil | Jimmy P. Baytycky, Mojmir Sovak, Mark S. Mitchell | 1989-03-14 |
| 4743633 | Compositions and methods for reducing the permeability of underground strata | Mark S. Mitchell, Mojmir Sovak | 1988-05-10 |
| 4663367 | Compositions and methods for reducing the permeability of underground strata | Mark S. Mitchell, Mojmir Sovak | 1987-05-05 |
| 4424300 | Powdered phenol-formaldehyde resin | Otto G. Udvardy, Patricia E. Titus | 1984-01-03 |