Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6200016 | Baffle assembly for a mixing vessel | Jurgen Reinemuth | 2001-03-13 |
| 6139026 | "Stabilized ""O"" ring gasket seal" | Morris E. Gruver, III, Eugene A. Priebe | 2000-10-31 |
| 5582799 | Closure for clean chemical reactor | Morris E. Gruver, III | 1996-12-10 |
| 5556113 | O-ring envelope gasket | Anthony S. Bellavia | 1996-09-17 |
| 5360198 | Valve for clean chemical reactor | Morris E. Gruver, III | 1994-11-01 |
| 5275501 | Quick opening manhole cover assembly for use with virtually any shape manhole cover | Robert R. Loomis | 1994-01-04 |
| 5069423 | Valve for clean chemical reactor | Morris E. Gruver, III | 1991-12-03 |
| 5038520 | Manway lift assist | Robert R. Loomis, Douglas H. Rigerman | 1991-08-13 |
| 4601583 | Multi-hubbed separable blade agitators | — | 1986-07-22 |
| 4365897 | Separable blade agitator with clip-on impellers | Vincent J. Piarulli | 1982-12-28 |
| 4361334 | Compression sealed composite seal seat with cooling passages | Vincent J. Piarulli, James W. Chapman | 1982-11-30 |
| 4279356 | Quick opening manhole cover assembly | Vincent J. Piarulli | 1981-07-21 |