Gregory Scof Fleming

US Patent:

58206590, Oct 13, 1998

Filed:

Mar 28, 1997

Appl. No.:

8/826250

Inventors:

Okan Max Ekiner - Wilmington DE
Gregory Kendall Fleming - Wilmington DE

Assignee:

L'Air Liquide, Societe Anonyme Pour L'Etude Et, L'Exploitation des
Procedes Georges Claude - Paris

International Classification:

B01D 5322
B01D 7164
B01D 7168

US Classification:

96 8

Abstract:

Gas separation membranes having enhanced selectivity for a mixture of gases is disclosed. The membranes may be asymmetric or multicomponent. The membranes surprisingly provide selectivity for gases in a mixture that approaches the relative selectivity of the single gas components. Preferably the membrane provides selectivity for a mixture of gases which is at least 65%, preferably 80%, of the relative selectivity of the corresponding single gases. A process for making improved gas separation membranes is also disclosed.

US Patent:

56183321, Apr 8, 1997

Filed:

Jun 5, 1995

Appl. No.:

8/465304

Inventors:

Okan M. Ekiner - Wilmington DE
Gregory K. Fleming - Wilmington DE

Assignee:

L'Air Liquide, S.A. - Paris

International Classification:

B01D 5322

US Classification:

95 51

Abstract:

Gas separation membranes having enhanced selectivity for a mixture of gases is disclosed. The membranes may be asymmetric or multicomponent. The membranes surprisingly provide selectivity for gases in a mixture that approaches the relative selectivity of the single gas components. Preferably the membrane provides selectivity for a mixture of gases which is at least 65%, preferably 80%, of the relative selectivity of the corresponding single gases. A process for making improved gas separation membranes is also disclosed.

US Patent:

54684307, Nov 21, 1995

Filed:

May 19, 1994

Appl. No.:

8/246201

Inventors:

Okan M. Ekiner - Wilmington DE
Gregory K. Fleming - Wilmington DE

Assignee:

L'Air Liquide S.A. - Paris Cedex

International Classification:

D01D 512
D01D 5247
D01F 804

US Classification:

264 28

Abstract:

A process for making gas separation membranes having enhanced selectivity for a mixture of gases is disclosed. The membranes may be asymmetric or multicomponent. The membranes surprisingly provide selectivity for gases in a mixture that approaches the relative selectivity of the single gas components. Preferably the membrane provides selectivity for a mixture of gases which is at least 65%, preferably 80%, of the relative selectivity of the corresponding single gases.