Issued Patents All Time
Showing 26–42 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7611630 | Method and device for evaluation of pharmaceutical compositions | Dwayne T. Friesen, Scott B. McCray | 2009-11-03 |
| 6221319 | Plasma discharge reactors for the preparation of bioactive compounds | Bruce Johnson, James B. West, Dwayne T. Friesen | 2001-04-24 |
| 6136222 | Liquid absorbent solutions for separating nitrogen from natural gas | Dwayne T. Friesen, David J. Edlund, David Keith Lyon, Warren K. Miller | 2000-10-24 |
| 6077457 | Liquid absorbent solutions for separating nitrogen from natural gas | Dwayne T. Friesen, David J. Edlund, David Keith Lyon, Warren K. Miller | 2000-06-20 |
| 5772855 | Preparation of bioactive compounds by plasma synthesis | Bruce Johnson, James B. West, Dwayne T. Friesen | 1998-06-30 |
| 5516745 | Nitrogen sorption | Dwayne T. Friesen, David J. Edlund, Warren K. Miller | 1996-05-14 |
| 5514276 | Permselective hollow fiber fluid separation membranes having plasma-polymerized lumen-side coatings | Geoffrey D. Hyde, Bruce Johnson, George W. Rayfeld | 1996-05-07 |
| 5354469 | Layered plasma polymer composite membranes | — | 1994-10-11 |
| 5225174 | Nitrogen sorption | Dwayne T. Friesen, David J. Edlund, Warren K. Miller | 1993-07-06 |
| 4948506 | Physicochemically functional ultrathin films by interfacial polymerization | Harold K. Lonsdale, Dwayne T. Friensen, Kelly L. Smith, Bruce Johnson, Carl C. Wamser | 1990-08-14 |
| 4900502 | Hollow fiber annealing | Scott B. McCray, Edward Dennis LaChapelle, Kris A. Krichko | 1990-02-13 |
| 4883593 | Ultrathin-skinned asymmetric membranes by immiscible solvents treatment | Dwayne T. Friesen | 1989-11-28 |
| 4876287 | Selective ion-complexing media for the removal of metal-ion contaminants from plating baths | Dwayne T. Friesen | 1989-10-24 |
| 4781733 | Semipermeable thin-film membranes comprising siloxane, alkoxysilyl and aryloxysilyl oligomers and copolymers | Dwayne T. Friesen | 1988-11-01 |
| 4702838 | Selective and continuous removal of metal-ion contaminants from plating baths | Dwayne T. Friesen | 1987-10-27 |
| 4622344 | Recovery of ammoniacal copper with novel organogels | Mark E. Tuttle, James W. Brooke | 1986-11-11 |
| 4515906 | Anisotropic microporous supports impregnated with polymeric ion-exchange materials | Dwayne T. Friesen, Mark E. Tuttle | 1985-05-07 |