Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9095842 | Diatomaceous earth filter aid containing a low crystalline silica content | Wilson Kamau Wanene, Chongjun Jiang, Peter E. Lenz | 2015-08-04 |
| 8084392 | Crystalline silica-free diatomaceous earth filter aids and methods of manufacturing the same | Peter E. Lenz, James S. Shui | 2011-12-27 |