Assignee
PERMEA INC
US20 patents
Top patents by PatentIndex Score
US5565149AOct 15, 1996
Control of dissolved gases in liquids
PERMEA INC156 citations96
US5282969AFeb 1, 1994
High pressure feed membrane separation process
PERMEA INC58 citations96
US6138995AOct 31, 2000
Dispense of beverage containing controlled levels of dissolved gas
PERMEA INC92 citations95
US5641337AJun 24, 1997
Process for the dehydration of a gas
PERMEA INC113 citations95
US5306331AApr 26, 1994
Process for cooling the feed gas to gas separation systems
PERMEA INC105 citations94
US5259869ANov 9, 1993
Use of membrane separation to dry gas streams containing water vapor
PERMEA INC77 citations94
US4894068AJan 16, 1990
Process for capturing nitrogen from air using gas separation membranes
PERMEA INC69 citations94
US5306427AApr 26, 1994
Low pressure feed membrane separation process
PERMEA INC25 citations93
US5215554AJun 1, 1993
Membranes having enhanced selectivity and method of producing such membranes
PERMEA INC53 citations93
US4880441ANov 14, 1989
Asymmetric gas separation membranes having graded density skins
PERMEA INC74 citations93
US5779897AJul 14, 1998
Hollow fiber membrane device with inert filaments randomly distributed in the inter-fiber voids
PERMEA INC139 citations91
US4871494AOct 3, 1989
Process for forming asymmetric gas separation membranes having graded density skins
PERMEA INC34 citations91
US4992221AFeb 12, 1991
Asymmetric gas separation membranes having improved strength
PERMEA INC23 citations90
US5030251AJul 9, 1991
System and method for separating a portion of a gas from a mixture of gases
PERMEA INC27 citations87
US5131929AJul 21, 1992
Pressure control for improved gas dehydration in systems which employ membrane dryers in intermittent service
PERMEA INC42 citations86
US4728346AMar 1, 1988
Permeation modified asymmetric gas separation membranes having graded density skins
PERMEA INC24 citations81
US5252219AOct 12, 1993
Compressed permeate sweep membrane separation process
PERMEA INC18 citations74
US5207906AMay 4, 1993
Membrane separation module
PERMEA INC17 citations70
US5655570AAug 12, 1997
Condensate drain device
PERMEA INC10 citations65
US5013767AMay 7, 1991
Asymmetric gas separation membranes having improved strength
PERMEA INC6 citations60