Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8668828 | Sanitary spiral wound filtration cartridge | Peter Knappe | 2014-03-11 |
| 6755970 | Back-flushable spiral wound filter and methods of making and using same | Peter Knappe, Seymour S. Kremen, Hans A. Thomason | 2004-06-29 |