Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5997601 | Method for making moisture resistant calcium-containing particles | — | 1999-12-07 |
| 5917110 | Moisture-resistant calcium containing particles | — | 1999-06-29 |
| 5403495 | Fluoride removal system | Surendra K. Mishra, James B. Pfeiffer | 1995-04-04 |
| 5039428 | Waste water treatment process using improved recycle of high density sludge | Thomas H. Wentzler, Surendra K. Mishra, E. Stuart Savage | 1991-08-13 |