Patents by Inventor Gregory K. Fleming
Gregory K. Fleming has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20160184770Abstract: H2S is removed from a feed gas by a gas separation membrane including a separation layer that is made of a blend of P84 and Matrimid.Type: ApplicationFiled: September 30, 2015Publication date: June 30, 2016Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventors: Sudhir S. KULKARNI, Dean W. KRATZER, Edgar S. SANDERS, JR., Gregory K. FLEMING
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Publication number: 20160184771Abstract: H2S is removed from a feed gas by a gas separation membrane including a separation layer that is made of a blend of P84 and Matrimid.Type: ApplicationFiled: December 18, 2015Publication date: June 30, 2016Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventors: Sudhir S. KULKARNI, Dean W. Kratzer, Edgar S. Sanders, JR., Gregory K. Fleming, Fan Z. Worley
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Patent number: 6605133Abstract: Processes and systems to recover at least one perfluorocompound gas from a gas mixture are provided. In one embodiment the inventive process comprises the steps of a) providing a gas mixture comprising at least one perfluorocompound gas and at least one carrier gas, the gas mixture being at a predetermined pressure; b) providing at least one glassy polymer membrane having a feed side and a permeate side; c) contacting the feed side of the at least one membrane with the gas mixture; d) withdrawing from the feed side of the membrane as a non-permeate stream at a pressure which is substantially equal to the predetermined pressure a concentrated gas mixture comprising essentially the at least one perfluorocompound gas; and e) withdrawing from the permeate side of the membrane as a permeate stream a depleted gas mixture comprising essentially the at least one carrier gas.Type: GrantFiled: April 23, 1999Date of Patent: August 12, 2003Assignees: L'Air Liquide - Societe Anonyme a' Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude, American Air LiquideInventors: Yao-En Li, Joseph E. Paganessi, David Vassallo, Gregory K. Fleming
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Patent number: 6444011Abstract: Processes and systems to recover at least one perfluorocompound gas from a gas mixture are provided. In one embodiment the inventive process comprises the steps of a) providing a gas mixture comprising at least one perfluorocompound gas and at least one carrier gas, the gas mixture being at a predetermined pressure; b) providing at least once glassy polymer membrane having a feed side and a permeate side; c) contacting the feed side of the at least one membrane with the gas mixture; d) withdrawing from the feed side of the membrane as a non-permeate stream at a pressure which is substantially equal to the predetermined pressure a concentrated gas mixture comprising essentially the at least one perfluorocompound gas; and e) withdrawing from the permeate side of the membrane as a permeate stream a depleted gas mixture comprising essentially the at least one carrier gas.Type: GrantFiled: January 25, 2001Date of Patent: September 3, 2002Assignee: American Air Liqide, Inc.Inventors: Yao-En Li, Jospeh E. Paganessi, David Vassallo, Gregory K. Fleming
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Patent number: 6312502Abstract: Processes and systems to recover at least one perfluorocompound gas from a gas mixture are provided. In one embodiment the inventive process comprises the steps of a) providing a gas mixture comprising at least one perfluorocompound gas and at least one carrier gas, the gas mixture being at a predetermined pressure; b) providing at least one glassy polymer membrane having a feed side and a permeate side; c) contacting the feed side of the at least one membrane with the gas mixture; d) withdrawing from the feed side of the membrane as a non-permeate stream at a pressure which is substantially equal to the predetermined pressure a concentrated gas mixture comprising essentially the at least one perfluorocompound gas; and e) withdrawing from the permeate side of the membrane as a permeate stream a depleted gas mixture comprising essentially the at least one carrier gas.Type: GrantFiled: April 23, 1999Date of Patent: November 6, 2001Assignees: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude, American Air LiquideInventors: Yao-En Li, Jospeh E. Paganessi, David Vassallo, Gregory K. Fleming
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Publication number: 20010029841Abstract: Processes and systems to recover at least one perfluorocompound gas from a gas mixture are provided. In one embodiment the inventive process comprises the steps of a) providing a gas mixture comprising at least one perfluorocompound gas and at least one carrier gas, the gas mixture being at a predetermined pressure; b) providing at least once glassy polymer membrane having a feed side and a permeate side; c) contacting the feed side of the at least one membrane with the gas mixture; d) withdrawing from the feed side of the membrane as a non-permeate stream at a pressure which is substantially equal to the predetermined pressure a concentrated gas mixture comprising essentially the at least one perfluorocompound gas; and e) withdrawing from the permeate side of the membrane as a permeate stream a depleted gas mixture comprising essentially the at least one carrier gas.Type: ApplicationFiled: January 25, 2001Publication date: October 18, 2001Inventors: Yao-En Li, Joseph E. Paganessi, David Vassallo, Gregory K. Fleming
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Patent number: 6254666Abstract: Processes and systems to recover at least one perfluorocompound gas from a gas mixture are provided. In one embodiment the inventive process comprises the steps of a) providing a gas mixture comprising at least one perfluorocompound gas and at least one carrier gas, the gas mixture being at a predetermined pressure; b) providing at least one glassy polymer membrane having a feed side and a permeate side; c) contacting the feed side of the at least one membrane with the gas mixture; d) withdrawing from the feed side of the membrane as a non-permeate stream at a pressure which is substantially equal to the predetermined pressure a concentrated gas mixture comprising essentially the at least one perfluorocompound gas; and e) withdrawing from the permeate side of the membrane as a permeate stream a depleted gas mixture comprising essentially the at least one carrier gas.Type: GrantFiled: March 28, 2000Date of Patent: July 3, 2001Assignees: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude, American Air LiquideInventors: Yao-En Li, Jospeh E. Paganessi, David Vassallo, Gregory K. Fleming
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Patent number: 6214089Abstract: Processes and systems to recover at least one perfluorocompound gas from a gas mixture are provided. In one embodiment the inventive process comprises the steps of a) providing a gas mixture comprising at least one perfluorocompound gas and at least one carrier gas, the gas mixture being at a predetermined pressure; b) providing at least one glassy polymer membrane having a feed side and a permeate side; c) contacting the feed side of the at least one membrane with the gas mixture; d) withdrawing from the feed side of the membrane as a non-permeate stream at a pressure which is substantially equal to the predetermined pressure a concentrated gas mixture comprising essentially the at least one perfluorocompound gas; and e) withdrawing from the permeate side of the membrane as a permeate stream a depleted gas mixture comprising essentially the at least one carrier gas.Type: GrantFiled: July 21, 1998Date of Patent: April 10, 2001Assignees: American Air Liquide, Inc., L'Air Liquide, Societe Anonyme pour l'Etude et, l'Exploitation des Procedes Georges ClaudeInventors: Yao-En Li, Jospeh E. Paganessi, David Vassallo, Gregory K. Fleming
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Patent number: 5919285Abstract: Processes and systems to recover at least one perfluorocompound gas from a gas mixture are provided. In one embodiment the inventive process comprises the steps of a) providing a gas mixture comprising at least one perfluorocompound gas and at least one carrier gas, the gas mixture being at a predetermined pressure; b) providing at least one glassy polymer membrane having a feed side and a permeate side; c) contacting the feed side of the at least one membrane with the gas mixture; d) withdrawing from the feed side of the membrane as a non-permeate stream at a pressure which is substantially equal to the predetermined pressure a concentrated gas mixture comprising essentially the at least one perfluorocompound gas; and e) withdrawing from the permeate side of the membrane as a permeate stream a depleted gas mixture comprising essentially the at least one carrier gas.Type: GrantFiled: April 3, 1998Date of Patent: July 6, 1999Assignees: American Air Liquide, Inc., l'Air Liquide, Societe Anonyme Pour l'Etude et, l'Exploitation Des Procedes Georges ClaudeInventors: Yao-En Li, Joseph E. Paganessi, David Vassallo, Gregory K. Fleming
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Patent number: 5858065Abstract: Processes and systems to recover at least one perfluorocompound gas from a gas mixture are provided. In one embodiment the inventive process comprises providing a gas mixture comprising at least one perfluorocompound gas and at least one carrier gas, the gas mixture being at a predetermined pressure; providing at least one size selective membrane having a feed side and a permeate side; contacting the feed side of the at least one membrane with the gas mixture; withdrawing from the feed side of the membrane as a non-permeate stream at a pressure which is substantially equal to the predetermined pressure a concentrated gas mixture comprising essentially the at least one perfluorocompound gas; and withdrawing from the permeate side of the membrane as a permeate stream a depleted gas mixture comprising essentially the at least one carrier gas.Type: GrantFiled: January 16, 1997Date of Patent: January 12, 1999Assignee: American Air LiquideInventors: Yao-En Li, Joseph E. Paganessi, David Vassallo, Gregory K. Fleming
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Patent number: 5785741Abstract: Processes and systems to recover at least one perfluorocompound gas from a gas mixture are provided. In one embodiment the inventive process comprises the steps of a) providing a gas mixture comprising at least one perfluorocompound gas and at least one carrier gas, the gas mixture being at a predetermined pressure; b) providing at least one glassy polymer membrane having a feed side and a permeate side; c) contacting the feed side of the at least one membrane with the gas mixture; d) withdrawing from the feed side of the membrane as a non-permeate stream at a pressure which is substantially equal to the predetermined pressure a concentrated gas mixture comprising essentially the at least one perfluorocompound gas; and e) withdrawing from the permeate side of the membrane as a permeate stream a depleted gas mixture comprising essentially the at least one carrier gas.Type: GrantFiled: June 14, 1996Date of Patent: July 28, 1998Assignees: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges, Claude, American Air LiquideInventors: Yao-En Li, Joseph E. Paganessi, David Vassallo, Gregory K. Fleming
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Patent number: 5618332Abstract: 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.Type: GrantFiled: June 5, 1995Date of Patent: April 8, 1997Assignee: L'Air Liquide, S.A.Inventors: Okan M. Ekiner, Gregory K. Fleming
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Patent number: 5468430Abstract: 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.Type: GrantFiled: May 19, 1994Date of Patent: November 21, 1995Assignee: L'Air Liquide S.A.Inventors: Okan M. Ekiner, Gregory K. Fleming