Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7229560 | Sack-based processes for recovering oil floating on water | Glenn R. Rink, James F. Morris, Stephen C. Stelpstra, Robert L. Rosania, Jan R. Hegeman | 2007-06-12 |
| 6723791 | Systems for ameliorating aqueous hydrocarbon spills | Glenn R. Rink, James F. Morris, Stephen C. Stelpstra, Robert L. Rosania, Jan R. Hegeman | 2004-04-20 |
| 5998640 | Method for recovering oil from an oil-bearing solid material | Gary R. Haefele, Gary L. Dunkel, Paul Wegner | 1999-12-07 |
| 5863440 | Methods for ameliorating oil spills in marine and inland waters | Glenn R. Rink, Robert L. Rosania, David R. Smith, Thomas C. Johnson, Jan R. Hegeman | 1999-01-26 |
| 5439597 | Method for removing chemical contaminants from material and apparatus for same | — | 1995-08-08 |
| 4678370 | Sewer renovation system | — | 1987-07-07 |
| 4623370 | Gas treatment process | John William Hemmings | 1986-11-18 |