Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8070945 | Filtration module including unitary filter cartridge-bowl construction | Ralph Stankowski | 2011-12-06 |
| 7445710 | Filtration module including unitary filter cartridge-bowl construction | Ralph Stankowski | 2008-11-04 |
| 6533933 | Filtration module including unitary filter cartridge-bowl construction | Ralph Stankowski | 2003-03-18 |
| 5443723 | Membrane support and sealing apparatus | Ralph Stankowski | 1995-08-22 |