Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4983288 | Filter element with membrane-type filter material | Massoud Karbachsch | 1991-01-08 |
| 4331535 | Leakage detecting and detouring filter housing-assembly | — | 1982-05-25 |
| 4319997 | Multiple filter case | — | 1982-03-16 |