Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6500237 | Removing hydrogen sulfide from a gaseous mixture using ferric ions bonded to calcined diatomite | Eric L. Winchester, Jeffrey K. Hum | 2002-12-31 |
| 6200482 | Arsenic filtering media | Eric L. Winchester, Ronald C Berry, SR. | 2001-03-13 |