Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5505746 | Method of treating coal to reduce sulphur and chlorine emissions | Josh A. O'Donnell | 1996-04-09 |
| 5478452 | In situ isolation of volatile organic compounds from groundwater | John J Richard | 1995-12-26 |
| 5181428 | Method and means for testing soil samples | — | 1993-01-26 |
| 5024753 | Material separation efficiency determination employing fluorescing control particles | Richard Markuszewski, William H. Buttermore | 1991-06-18 |
| 4859212 | Chemical cleaning of coal by molten caustic leaching after pretreatment by low-temperature devolatilization | Surender M. Kaushik, Navin D. Shah, Richard Markuszewski | 1989-08-22 |
| 4277635 | Process of concentrating ethanol from dilute aqueous solutions thereof | Charles S. Oulman | 1981-07-07 |