Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6986844 | Solvent-resistant microporous polybenzimidazole membranes and modules | Dwayne T. Friesen, Scott B. McCray, Kendall R. Pearson, Roderick J. Ray, Delores R. Sidwell +1 more | 2006-01-17 |
| 6623639 | Solvent-resistant microporous polybenzimidazole membranes | Dwayne T. Friesen, Scott B. McCray, Kendall R. Pearson, Roderick J. Ray, Delores R. Sidwell +1 more | 2003-09-23 |
| 5582725 | Chlorine-resistant composite membranes with high organic rejection | Scott B. McCray, Dwayne T. Friesen, Leslie D. Nelson | 1996-12-10 |
| 4772391 | Composite membrane for reverse osmosis | Richard W. Baker | 1988-09-20 |