Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5932091 | Oily waste water treatment system | Kevin Todd Tompkins, Jerome S. Stefanko, Brian L. Owsenek, Lawrence W. Tomlinson | 1999-08-03 |
| 4649281 | Oil content monitor/control system | Ray Schmitt, Francis D. Kempel, Charles N. Waltrick, deceased | 1987-03-10 |
| 4647371 | Oil/water disperser device for use in an oil content monitor/control system | Ray Schmitt, Chadwick L. Trent, Francis D. Kempel | 1987-03-03 |