Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6193088 | Flask vent and method of making same | John R. Costello, Jonathan N. Lipsky, Ralph W. Collins, Robert A. Giacobbe | 2001-02-27 |
| 6170684 | Flask vent and method of making same | John R. Costello | 2001-01-09 |
| 5653888 | Fluid filter assembly including gel removing barbs | Thomas Haddock | 1997-08-05 |
| 5348646 | Fluid filter assembly | John R. Costello, Leonard F. Knoedler, Mary K. Boomus | 1994-09-20 |
| 4444661 | Filter device | Mark Jackson, Attila Vadnay | 1984-04-24 |
| 4369112 | Filter device | Robert E. Corbett | 1983-01-18 |
| 4319996 | Filter with initially flat membrane and curved membrane support | Karlis Vizulis | 1982-03-16 |