Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8268041 | Hollow organic/inorganic composite fibers, sintered fibers, methods of making such fibers, gas separation modules incorporating such fibers, and methods of using such modules | Timothy L. MURRAY, Nicolas Richet | 2012-09-18 |
| 8101009 | Separation membrane by controlled annealing of polyimide polymers | John W. Simmons | 2012-01-24 |
| 7422623 | Separation membrane by controlled annealing of polyimide polymers | John W. Simmons | 2008-09-09 |
| 7399897 | Method of separating olefins from mixtures with paraffins | Ian C. Roman, John W. Simmons | 2008-07-15 |
| 7393383 | Separation membrane made from blends of polyimide with polyamide or polyimide-amide polymers | John W. Simmons | 2008-07-01 |
| 7025804 | Method for separating hydrocarbon-containing gas mixtures using hydrocarbon-resistant membranes | John W. Simmons, Sudhir S. Kulkarni | 2006-04-11 |
| 7018445 | Polyimide blends for gas separation membranes | John W. Simmons | 2006-03-28 |
| 6663805 | Process for making hollow fiber mixed matrix membranes | Sudhir S. Kulkarni | 2003-12-16 |
| 6383265 | Polymer blend membranes with improved mechanical properties | — | 2002-05-07 |
| 6296684 | Polymer blend membranes with improved mechanical properties | — | 2001-10-02 |
| 5922791 | Polymer blend membranes with improved mechanical properties | — | 1999-07-13 |
| 5917137 | Gas separation membranes of blends of polyethersulfones with aromatic polyimides | — | 1999-06-29 |
| 5820659 | Multicomponent or asymmetric gas separation membranes | Gregory K. Fleming | 1998-10-13 |
| 5618332 | Process for enhancing the selectivity of mixed gas separations | Gregory K. Fleming | 1997-04-08 |
| 5608014 | Blends of polyethersulfones with aromatic polymides, polyamides or polyamide-imides useful for making gas separation membranes | — | 1997-03-04 |
| 5468430 | Process of making multicomponent or asymmetric gas separation membranes | Gregory K. Fleming | 1995-11-21 |
| 5310415 | Polyimide and polyamide-imide gas separation membranes | John W. Simmons | 1994-05-10 |
| 5248319 | Gas separation membranes made from blends of aromatic polyamide, polymide or polyamide-imide polymers | John W. Simmons | 1993-09-28 |
| 5232472 | Polyimide and polyamide-imide gas separation membranes | John W. Simmons | 1993-08-03 |
| 5102600 | Polymeric membranes | George Vassilatos | 1992-04-07 |
| 5091216 | Reactive post treatment for gas separation membranes | Richard Allen Hayes, Philip Manos | 1992-02-25 |
| 5085774 | Polymeric membranes | George Vassilatos | 1992-02-04 |
| 5085676 | Novel multicomponent fluid separation membranes | Richard Allen Hayes, Phillip Manos | 1992-02-04 |
| 5015270 | Phenylindane-containing polyimide gas separation membranes | Richard Allen Hayes | 1991-05-14 |
| 4983191 | Production of aromatic polyimide membranes | Richard Allen Hayes | 1991-01-08 |