Patents per Year
Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 8388842 | Brine seal for a filtration device | Irving Shelby, Craig R. Bartels | 2013-03-05 | |
| 4937196 | Membrane bioreactor system | Wolfgang Wrasidlo, Frieder Hofmann | 1990-06-26 | $7,036,000 |
| 4853128 | Non-distorting separator for autoclavable membrane stacks | Wolfgang Wrasidlo, Frieder Hofmann | 1989-08-01 | $10,062,000 |
| 4261834 | Device and process for removing pyrogens from aqueous solutions | — | 1981-04-14 | $3,088,000 |