Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5401420 | Sulfide ion-selective electrodes for control of chemical feed of organic sulfide products for metal ion precipitation from waste water | Pek L. Choo, Wayne M. Carlson | 1995-03-28 |
| 5346627 | Method for removing metals from a fluid stream | Pek L. Choo, John W. Sparapany, John H. Collins | 1994-09-13 |
| 5338816 | Hydrophobic polyelectrolytes used in removing color | Manian Ramesh, John W. Sparapany, Martha R. Finck, Chandrashekar S. Shetty | 1994-08-16 |
| 5328599 | System using sulfide ion-selective electrodes for control of chemical feed of organic sulfide products for metal ion precipitation from waste water | Pek L. Choo, Wayne M. Carlson | 1994-07-12 |
| 5283306 | Hydrophobic polyelectrolytes used in removing color | Manian Ramesh, John W. Sparapany, Martha R. Finck, Chandrashekar S. Shetty | 1994-02-01 |
| 5200089 | Pulp and paper mill wastewater color removal | Manian Ramesh, Martha R. Finck, Chandrashekar S. Shetty | 1993-04-06 |
| 5125966 | Process for de-oiling mill sludge | Natalie R. Blake | 1992-06-30 |
| 5047083 | Process for de-oiling mill scale | Natalie R. Blake | 1991-09-10 |
| 4476245 | Preparative process for alkaline earth metal, aluminum-containing spinels | — | 1984-10-09 |
| 4471070 | Preparative process for alkaline earth metal, aluminum-containing spinels | Jin S. Yoo, Emmett H. Burk, Jr. | 1984-09-11 |