Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4755305 | Continuous dewatering method | William C. Dorman | 1988-07-05 |
| 4740308 | Membrane cleaning process | Richard C. Agar, James William Bray, Gregory W. Marquart | 1988-04-26 |
| 4671874 | Continuous dewatering apparatus | William C. Dorman | 1987-06-09 |
| 4412888 | Wood pulp fiber process and resultant products | — | 1983-11-01 |
| 4332748 | Polyethylene recovery from broke | — | 1982-06-01 |
| 4310424 | Apparatus and method for removing suspended solids from a stream | Mary C. Obenour, Edward F. Hedrick | 1982-01-12 |
| 4308200 | Extraction of coniferous woods with fluid carbon dioxide and other supercritical fluids | — | 1981-12-29 |
| 4303533 | Method of removing fine suspended solids from effluent streams | — | 1981-12-01 |
| 4256630 | Activated sludge treatment | — | 1981-03-17 |
| 4226673 | Color removal from paper and pulp mill aqueous effluents | — | 1980-10-07 |
| 4213947 | Emission control system and method | Edward F. Hedrick | 1980-07-22 |