Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6623650 | Processes and apparatus for treating sewage or like sludge | — | 2003-09-23 |
| 6387281 | Processes and apparatus for treating sewage or like sludge | Frederick H. Kurtz | 2002-05-14 |
| 6237246 | Treating sewage or like sludge | — | 2001-05-29 |
| 4746339 | Filtering apparatus | — | 1988-05-24 |