| Patent Number |
Title Of Patent |
Date Issued |
| 8129498 |
Polymeric medium |
March 6, 2012 |
| A PBI compound includes imidazole nitrogens at least a portion of which are substituted with a moiety containing a carbonyl group, the substituted imidazole nitrogens being bonded to carbon of the carbonyl group. At least 85% of the nitrogens may be substituted. The carbonyl-containi |
| 8063174 |
Polybenzimidazole compounds |
November 22, 2011 |
| A PBI compound includes imidazole nitrogens at least a portion of which are substituted with a moiety containing a carbonyl group, the substituted imidazole nitrogens being bonded to carbon of the carbonyl group. At least 85% of the nitrogens may be substituted. The carbonyl-containi |
| 7772361 |
Polybenzimidazole compounds |
August 10, 2010 |
| A PBI compound that includes imidazole nitrogens, at least a portion of which are substituted with an organic-inorganic hybrid moiety. At least 85% of the imidazole nitrogens may be substituted. The organic-inorganic hybrid moiety may be an organosilane moiety, for example, (R)Me.sub |
| 7632898 |
Polymeric media comprising polybenzimidazoles N-substituted with organic-inorganic hybrid moiety |
December 15, 2009 |
| A PBI compound includes imidazole nitrogens at least a portion of which are substituted with an organic-inorganic hybrid moiety may be included in a separatory medium. At least 85% of the imidazole nitrogens may be substituted. The organic-inorganic hybrid moiety may be an organosilane |
| 7309758 |
Polybenzimidazole compounds, polymeric media, and methods of post-polymerization modifications |
December 18, 2007 |
| A PBI compound includes imidazole nitrogens at least a portion of which are substituted with a moiety containing a carbonyl group, the substituted imidazole nitrogens being bonded to carbon of the carbonyl group. At least 85% of the nitrogens may be substituted. The carbonyl-containi |
| 7259230 |
Polybenzimidazole compounds, polymeric media, and methods of post-polymerization modifications |
August 21, 2007 |
| A PBI compound includes imidazole nitrogens at least a portion of which are substituted with an organic-inorganic hybrid moiety. At least 85% of the imidazole nitrogens may be substituted. The organic-inorganic hybrid moiety may be an organosilane moiety, for example, (R)Me.sub.2SiCH |
| 7074256 |
Phosphazene membranes for gas separations |
July 11, 2006 |
| A polyphosphazene having a glass transition temperature ("T.sub.g") of approximately -20.degree. C. or less. The polyphosphazene has at least one pendant group attached to a backbone of the polyphosphazene, wherein the pendant group has no halogen atoms. In addition, no aromatic groups |
| 6036030 |
Method for producing a selectively permeable separation module |
March 14, 2000 |
| A method and apparatus is provided for casting a polymeric membrane on the inside surface of porous tubes to provide a permeate filter system capable of withstanding hostile operating conditions and having excellent selectivity capabilities. Any polymer in solution, by either solvent mea |
| 5385672 |
Method for preparing membranes with adjustable separation performance |
January 31, 1995 |
| Methods for adjustable separation of solutes and solvents involve the combination of the use of a maximally swollen membrane and subsequent vacuum depressurization exerted on the permeate side of that membrane. By adjusting the extent of depressurization it is possible to separate so |
