Patents by Inventor Philip Barrett
Philip Barrett 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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Patent number: 9222727Abstract: The invention relates to a process for removing oxygen from liquid argon using a TSA (temperature swing adsorption) cyclical process that includes cooling an adsorbent bed to sustain argon in a liquid phase; supplying the adsorbent bed with a liquid argon feed that is contaminated with oxygen and purifying the liquid argon thereby producing an argon product with less oxygen contaminant than is in the initial liquid argon feed; draining the purified residual liquid argon product and sending purified argon out of the adsorbent bed. Regeneration of specially prepared adsorbent allows the adsorbent bed to warm up to temperatures that preclude the use of requiring either vacuum or evacuation of adsorbent from the bed.Type: GrantFiled: March 1, 2013Date of Patent: December 29, 2015Assignee: Praxair Technology, Inc.Inventors: Persefoni E. Kechagia, Neil A. Stephenson, Philip A. Barrett, Hai Du, Steven J. Pontonio
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Patent number: 8926532Abstract: A goniometer comprises a first arm (2), a second arm (4) and a connecting portion (6) pivotally connecting the first arm (2) to the second arm (4) about a pivot axis (7). An instrument connector (8) is coupled to the first arm (2) arranged to couple to a surgical instrument (10). A method of aligning a surgical instrument (10) using the goniometer is also disclosed.Type: GrantFiled: September 11, 2009Date of Patent: January 6, 2015Assignee: Depuy International LimitedInventors: Philip Barrett, Alec Birkbeck, James Brooks, Andrew Burton, Marcellino Maheson
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Publication number: 20140245782Abstract: A method and apparatus for producing a purified liquid argon product in which liquid argon having oxygen impurities is produced in a cryogenic air separation plant by separating argon from oxygen within an argon column. An impure liquid argon stream, composed of part of the liquid argon, is purified in an adsorbent bed by adsorbing the oxygen impurities in an adsorbent to produce a purified liquid argon stream that constitutes the purified liquid argon product. During adsorption, the adsorbent bed is maintained at a reduced temperature with a coolant to prevent vaporization of the liquid argon. The bed is then regenerated by draining residual liquid argon from the adsorbent bed, introducing the residual liquid argon back into the air separation plant and then desorbing the oxygen impurities with a regeneration gas. After regeneration, the adsorbent bed is refilled with purified liquid argon prior to being brought back on-line.Type: ApplicationFiled: February 27, 2014Publication date: September 4, 2014Inventors: Henry E. Howard, Persefoni E. Kechagia, Philip A. Barrett, James R. Handley
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Publication number: 20140249023Abstract: An optimal material composition that allows for the purification of at least one feed component from a fluid feed stream such that the adsorbent has an oxygen capacity of at least 10 weight percent is described. More specifically, the material is an adsorbent for purification of a fluid feed stream having an oxygen to argon selectivity greater than or equal to a ratio of 3:1 and an oxygen capacity of greater than or equal to 10 weight percent, wherein the oxygen capacity is measured at a pressure in the range of about 9-10 Torr and a temperature of 77 degrees Kelvin after 4 hours of equilibration time and wherein the oxygen to argon selectivity is obtained by dividing the oxygen capacity by the argon capacity of the adsorbent measured at a pressure in the range of about 697-700 Torr and a temperature of 87 degrees Kelvin after 8 hours of equilibration time. The adsorption capacities are measured on a pure component basis.Type: ApplicationFiled: March 1, 2013Publication date: September 4, 2014Inventors: Philip A. Barrett, Steven J. Pontonio, Neil A. Stephenson, Persefoni E. Kechagia
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Publication number: 20140245781Abstract: The invention relates to a process for removing oxygen from liquid argon using a TSA (temperature swing adsorption) cyclical process that includes cooling an adsorbent bed to sustain argon in a liquid phase; supplying the adsorbent bed with a liquid argon feed that is contaminated with oxygen and purifying the liquid argon thereby producing an argon product with less oxygen contaminant than is in the initial liquid argon feed; draining the purified residual liquid argon product and sending purified argon out of the adsorbent bed. Regeneration of specially prepared adsorbent allows the adsorbent bed to warm up to temperatures that preclude the use of requiring either vacuum or evacuation of adsorbent from the bed.Type: ApplicationFiled: March 1, 2013Publication date: September 4, 2014Inventors: Persefoni E. Kechagia, Neil A. Stephenson, Philip A. Barrett, Hai Du, Steven J. Pontonio
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Patent number: 8323378Abstract: A method and apparatus for supplying oxygen to meet a user demand in which oxygen is separated from air by an electrically driven oxygen separation device to supply oxygen to meet the user demand and to charge an adsorbent bed with all or part of the separated oxygen. When a user demand exists, oxygen can be supplied from both the electrically driven oxygen separation device and from oxygen desorbed from the adsorbent bed.Type: GrantFiled: April 28, 2010Date of Patent: December 4, 2012Assignee: Praxair Technology, Inc.Inventors: Sadashiv Swami, Philip A. Barrett, Richard Martin Kelly
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Patent number: 8221718Abstract: The present invention relates generally to zeolites having a silica/alumina ratio of less than or equal to 10 (Si/Al?10) that are exchanged with Ag+ and thermally treated in such a way to favor adsorption over alternative catalytic and chemically reactive functionalities. The adsorbents of the present invention and the method of producing such adsorbents maximize the working adsorption capacity through ?-complexation. Applications for such adsorbents include any process in which contaminants from gas streams can form ?-complexes with the Ag in the zeolite, particularly the removal of CO, ethylene, propylene and the like from air and CO/H2 from air in prepurifier adsorbers in the production of ultra high purity (UHP) N2.Type: GrantFiled: December 11, 2009Date of Patent: July 17, 2012Assignee: Praxair Technology, Inc.Inventors: Mark William Ackley, Philip A. Barrett
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Publication number: 20110275958Abstract: A goniometer comprises a first arm (2), a second arm (4) and a connecting portion (6) pivotally connecting the first arm (2) to the second arm (4) about a pivot axis (7). An instrument connector (8) is coupled to the first arm (2) arranged to couple to a surgical instrument (10). A method of aligning a surgical instrument (10) using the goniometer is also disclosed.Type: ApplicationFiled: September 11, 2009Publication date: November 10, 2011Applicant: DePuy International LimitedInventors: Philip Barrett, Alec Birkbeck, James Brook, Andrew Burton, Marcellino Maheson
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Publication number: 20110265644Abstract: A method and apparatus for supplying oxygen to meet a user demand in which oxygen is separated from air by an electrically driven oxygen separation device to supply oxygen to meet the user demand and to charge an adsorbent bed with all or part of the separated oxygen. When a user demand exists, oxygen can be supplied from both the electrically driven oxygen separation device and from oxygen desorbed from the adsorbent bed.Type: ApplicationFiled: April 28, 2010Publication date: November 3, 2011Inventors: Sadashiv Swami, Philip A. Barrett, Richard Martin Kelly
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Publication number: 20100095849Abstract: The present invention relates generally to zeolites having a silica/alumina ratio of less than or equal to 10 (Si/Al?10) that are exchanged with Ag+ and thermally treated in such a way to favor adsorption over alternative catalytic and chemically reactive functionalities. The adsorbents of the present invention and the method of producing such adsorbents maximize the working adsorption capacity through ?-complexation. Applications for such adsorbents include any process in which contaminants from gas streams can form ?-complexes with the Ag in the zeolite, particularly the removal of CO, ethylene, propylene and the like from air and CO/H2 from air in prepurifier adsorbers in the production of ultra high purity (UHP) N2.Type: ApplicationFiled: December 11, 2009Publication date: April 22, 2010Inventors: Mark William Ackley, Philip A. Barrett
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Patent number: 7662213Abstract: The present invention relates generally to zeolites having a silica/alumina ratio of less than or equal to 10 (Si/Al?10) that are exchanged with Ag+ and thermally treated in such a way to favor adsorption over alternative catalytic and chemically reactive functionalities. The adsorbents of the present invention and the method of producing such adsorbents maximize the working adsorption capacity through ?-complexation. Applications for such adsorbents include any process in which contaminants from gas streams can form ?-complexes with the Ag in the zeolite, particularly the removal of CO, ethylene, propylene and the like from air and CO/H2 from air in prepurifier adsorbers in the production of ultra high purity (UHP) N2.Type: GrantFiled: October 21, 2008Date of Patent: February 16, 2010Assignee: Praxair Technology, Inc.Inventors: Mark William Ackley, Philip A. Barrett
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Publication number: 20090101011Abstract: The present invention relates generally to zeolites having a silica/alumina ratio of less than or equal to 10 (Si/Al?10) that are exchanged with Ag+ and thermally treated in such a way to favor adsorption over alternative catalytic and chemically reactive functionalities. The adsorbents of the present invention and the method of producing such adsorbents maximize the working adsorption capacity through ?-complexation. Applications for such adsorbents include any process in which contaminants from gas streams can form ?-complexes with the Ag in the zeolite, particularly the removal of CO, ethylene, propylene and the like from air and CO/H2 from air in prepurifier adsorbers in the production of ultra high purity (UHP) N2.Type: ApplicationFiled: October 21, 2008Publication date: April 23, 2009Inventors: Mark William Ackley, Philip A. Barrett
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Patent number: 7455718Abstract: The present invention relates generally to zeolites having a silica/alumina ratio of less than or equal to 10 (Si/Al?10) that are exchanged with Ag+ and thermally treated in such a way to favor adsorption over alternative catalytic and chemically reactive functionalities. The adsorbents of the present invention and the method of producing such adsorbents maximize the working adsorption capacity through ?-complexation. Applications for such adsorbents include any process in which contaminants from gas streams can form ?-complexes with the Ag in the zeolite, particularly the removal of CO, ethylene, propylene and the like from air and CO/H2 from air in prepurifier adsorbers in the production of ultra high purity (UHP) N2.Type: GrantFiled: June 30, 2005Date of Patent: November 25, 2008Assignee: Praxair Technology, Inc.Inventors: Mark William Ackley, Philip A. Barrett
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Publication number: 20070000382Abstract: The present invention relates generally to zeolites having a silica/alumina ratio of less than or equal to 10 (Si/Al?10) that are exchanged with Ag+ and thermally treated in such a way to favor adsorption over alternative catalytic and chemically reactive functionalities. The adsorbents of the present invention and the method of producing such adsorbents maximize the working adsorption capacity through ?-complexation. Applications for such adsorbents include any process in which contaminants from gas streams can form ?-complexes with the Ag in the zeolite, particularly the removal of CO, ethylene, propylene and the like from air and CO/H2 from air in prepurifier adsorbers in the production of ultra high purity (UHP) N2.Type: ApplicationFiled: June 30, 2005Publication date: January 4, 2007Inventors: Mark Ackley, Philip Barrett
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Publication number: 20060210454Abstract: Trace amounts of carbon monoxide and optionally hydrogen are removed from gaseous feed streams by passing the feed stream through a carbon monoxide adsorbent (33) prior to passing it through a supported metal catalyst (34). The invention saves significant capital and operational costs over existing processes.Type: ApplicationFiled: May 30, 2003Publication date: September 21, 2006Inventors: Himanshu Saxena, Mark Ackley, John Billingham, Philip Barrett
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Publication number: 20050168320Abstract: One or more lock or key units of a secure entry system is equipped with a radio receiver. The receiver permits a memory in the lock or key unit to be updated with new data that is modulated onto a radio frequency signal. By this technique, system-wide changes of programming data, such as changes of lockout lists and access codes, and changes targeted to specific units, such as disabling a particular key, can be implemented simply and quickly.Type: ApplicationFiled: November 15, 2004Publication date: August 4, 2005Inventors: Walter Henderson, Wayne Larson, Philip Barrett