Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 9085942 | Repaired wear and buckle resistant drill pipe and related methods | Ghazi J. Hashem, David J. Brunnert, John W. Kochera, Melissa Frilot, Thomas M. Redlinger | 2015-07-21 | |
| 4858693 | Compositions and methods for reducing the permeability of underground strata | Martin Navratil, Mojmir Sovak | 1989-08-22 | $9,834,000 |
| 4836285 | Composition and methods for reducing the permeability of underground strata | Martin Navratil, Mojmir Sovak | 1989-06-06 | $20,862,000 |
| 4811787 | Method for reducing the permeability of underground strata during secondary recovery of oil | Martin Navratil, Jimmy P. Baytycky, Mojmir Sovak | 1989-03-14 | $8,513,000 |
| 4743633 | Compositions and methods for reducing the permeability of underground strata | Martin Navratil, Mojmir Sovak | 1988-05-10 | $28,554,000 |
| 4663367 | Compositions and methods for reducing the permeability of underground strata | Martin Navratil, Mojmir Sovak | 1987-05-05 | $24,501,000 |