Assignee
PERMEA INC
US·20 granted patents·1,162 citations·filing 1986–1998
Top patents by PatentIndex Score
20 records- 0194US5565149AControl of dissolved gases in liquidsPERMEA INC·Filed 1996·Granted Oct 15, 1996·156 cites·26 claims
- 0293US5779897AHollow fiber membrane device with inert filaments randomly distributed in the inter-fiber voidsPERMEA INC·Filed 1996·Granted Jul 14, 1998·139 cites·11 claims
- 0393US5306331AProcess for cooling the feed gas to gas separation systemsPERMEA INC·Filed 1993·Granted Apr 26, 1994·105 cites·49 claims
- 0492US4894068AProcess for capturing nitrogen from air using gas separation membranesPERMEA INC·Filed 1988·Granted Jan 16, 1990·69 cites·5 claims
- 0590US6138995ADispense of beverage containing controlled levels of dissolved gasPERMEA INC·Filed 1998·Granted Oct 31, 2000·92 cites·27 claims
- 0689US5641337AProcess for the dehydration of a gasPERMEA INC·Filed 1995·Granted Jun 24, 1997·113 cites·14 claims
- 0788US5259869AUse of membrane separation to dry gas streams containing water vaporPERMEA INC·Filed 1992·Granted Nov 9, 1993·77 cites·12 claims
- 0888US4880441AAsymmetric gas separation membranes having graded density skinsPERMEA INC·Filed 1989·Granted Nov 14, 1989·74 cites·32 claims
- 0984US5282969AHigh pressure feed membrane separation processPERMEA INC·Filed 1993·Granted Feb 1, 1994·58 cites·4 claims
- 1081US5215554AMembranes having enhanced selectivity and method of producing such membranesPERMEA INC·Filed 1992·Granted Jun 1, 1993·53 cites·98 claims
- 1173US5131929APressure control for improved gas dehydration in systems which employ membrane dryers in intermittent servicePERMEA INC·Filed 1991·Granted Jul 21, 1992·42 cites·7 claims
- 1272US4871494AProcess for forming asymmetric gas separation membranes having graded density skinsPERMEA INC·Filed 1987·Granted Oct 3, 1989·34 cites·24 claims
- 1363US5030251ASystem and method for separating a portion of a gas from a mixture of gasesPERMEA INC·Filed 1990·Granted Jul 9, 1991·27 cites·21 claims
- 1462US5306427ALow pressure feed membrane separation processPERMEA INC·Filed 1993·Granted Apr 26, 1994·25 cites·4 claims
- 1562US4728346APermeation modified asymmetric gas separation membranes having graded density skinsPERMEA INC·Filed 1986·Granted Mar 1, 1988·24 cites·37 claims
- 1658US4992221AAsymmetric gas separation membranes having improved strengthPERMEA INC·Filed 1990·Granted Feb 12, 1991·23 cites·11 claims
- 1754US5252219ACompressed permeate sweep membrane separation processPERMEA INC·Filed 1992·Granted Oct 12, 1993·18 cites·3 claims
- 1849US5207906AMembrane separation modulePERMEA INC·Filed 1992·Granted May 4, 1993·17 cites·3 claims
- 1942US5655570ACondensate drain devicePERMEA INC·Filed 1996·Granted Aug 12, 1997·10 cites·6 claims
- 2035US5013767AAsymmetric gas separation membranes having improved strengthPERMEA INC·Filed 1989·Granted May 7, 1991·6 cites·3 claims
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