Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5711018 | Rotary kiln treatment of potliner | Herman J. Hittner, John N. Lees, Jr., David W. Rierson, Ludmila Dinter-Brown | 1998-01-20 |
| 5616296 | Waste management facility | Herman J. Hittner, John N. Lees, Jr., David W. Rierson, Ludmila Dinter-Brown | 1997-04-01 |
| 5476990 | Waste management facility | Herman J. Hittner, John N. Lees, Jr., David W. Rierson, Ludmila Dinter-Brown | 1995-12-19 |