Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7909175 | Filter assemblies | Richard Gutman, Kenneth Roy Weight, George Brandwood Peacock, Nicholas L. Yoward | 2011-03-22 |
| 5863432 | Cylindrical filters | — | 1999-01-26 |
| 5593529 | Cylindrical filters and their manufacture | — | 1997-01-14 |
| 5468382 | Depth filter media | Nigel J. D. Cook, Kenneth Roy Weight, Richard Gutman, Roger A. Buttery | 1995-11-21 |
| 5360650 | Cylindrical filters and their manufacture | — | 1994-11-01 |
| 5185190 | Cylindrical filters and their manufacture | — | 1993-02-09 |