Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7354679 | Ion conductive random copolymers | Shuguang Cao, Jian Ping Chen, Kie Hyun Nam, David Olmeijer, Helen Xu | 2008-04-08 |
| 7202001 | Sulfonated copolymer | Shuguang Cao, Helen Xu, Kie Hyun Nam, Jian Ping Chen, David Olmeijer | 2007-04-10 |
| 7094490 | Ion conductive block copolymers | Shuguang Cao, Helen Xu, Kie Hyun Nam, Jian Ping Chen | 2006-08-22 |
| 6734279 | Two step production of polycarbonates | John O. Osby | 2004-05-11 |
| 6641643 | Ceramic deoxygenation hybrid systems for the production of oxygen and nitrogen gases | John A. Jensvold, Scott Campbell | 2003-11-04 |
| 6387163 | Ozone treatment of surface of membrane to improve permselectivity | Pamela J. Leong, Frederick L. Coan, John A. Jensvold | 2002-05-14 |
| 6168649 | Membrane for separation of xenon from oxygen and nitrogen and method of using same | John A. Jensvold | 2001-01-02 |
| 6156381 | Ozone treatment of surface of membrane to improve permselectivity | Pamela J. Leong, Frederick L. Coan, John A. Jensvold | 2000-12-05 |
| 6136073 | Boreside feed modules with permeate flow channels | Frederick L. Coan, John A. Jensvold | 2000-10-24 |
| 5837032 | Gas separations utilizing glassy polymer membranes at sub-ambient temperatures | David J. Moll, Alan F. Burmester, Thomas C. Young, Kent B. McReynolds, James E. Clark +7 more | 1998-11-17 |
| 5679133 | Gas separations utilizing glassy polymer membranes at sub-ambient temperatures | David J. Moll, Alan F. Burmester, Thomas C. Young, Kent B. McReynolds, James E. Clark +7 more | 1997-10-21 |
| 5352272 | Gas separations utilizing glassy polymer membranes at sub-ambient temperatures | David J. Moll, Alan F. Burmester, Thomas C. Young, Kent B. McReynolds, James E. Clark +7 more | 1994-10-04 |
| 5209848 | Xylylene based polyether membranes for gas separation | Ritchie A. Wessling | 1993-05-11 |
| 5124430 | Arylene carbonate cyanoaryl ether copolymer | Theodore L. Parker | 1992-06-23 |
| 5026823 | Novel alicyclic polyimides and a process for making the same | John D. Summers | 1991-06-25 |
| 4988371 | Novel alicyclic polyimide gas separation membranes | John D. Summers, Edgar S. Sanders, Jr. | 1991-01-29 |
| 4874401 | Gas separation membranes from bisphenol AF polycarbonates and polyestercarbonates | — | 1989-10-17 |
| 4851014 | Gas separation membranes derived from polycarbonates, polyesters, and polyestercarbonates containing tetrafluorobisphenol F | — | 1989-07-25 |
| 4840646 | Tetrabromo bisphenol based polyestercarbonate membranes and method of using | Joginder N. Anand, Stephen E. Bales, Darrell C. Feay | 1989-06-20 |
| 4818254 | Semi-permeable membranes consisting predominantly of polycarbonates derived from tetrahalobisphenols | Joginder N. Anand, Darrell C. Feay, Stephen E. Bales | 1989-04-04 |