Patents by Inventor Kelly Leitch
Kelly Leitch 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: 20070204748Abstract: A pressure swing adsorption system including a plurality of vessels having one or more layers of adsorbent material therein, a feed gas channel, a waste channel, and a product channel. The system also includes at least one parallel channel connected to each of the vessels via a respective conduit with a valve. At least one pressure measuring device i configured to measure a pressure within the parallel channel. And, a controller is provided that is configured to monitor the at least one pressure measured by the at least one pressure measuring device during a PSA cycle performed within the PSA system, in order to determine the performance of the cycle and monitor proper operation of the system.Type: ApplicationFiled: March 6, 2007Publication date: September 6, 2007Applicant: H2GEN INNOVATIONS, INC.Inventors: Franklin Lomax, Christopher Van Dyke, Kelly Leitch, Richard Todd
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Publication number: 20060118575Abstract: Multi compressor systems and apparatuses for the manufacture, storage and dispensing of manufactured hydrogen fuel to hydrogen vehicle tanks or remote mobile refuelers are disclosed.Type: ApplicationFiled: September 23, 2005Publication date: June 8, 2006Inventors: Robert Boyd, David Wardle, Kelly Leitch, Satish Tamhankar, Gary Lomas
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Patent number: 7055333Abstract: A batch process and apparatus for producing a pressurized liquid carbon dioxide stream includes distilling a feed stream of carbon dioxide vapor off of a liquid carbon dioxide supply; introducing the carbon dioxide vapor feed stream into at least one purifying filter; condensing the purified feed stream within a condenser to form an intermediate liquid carbon dioxide stream; introducing the intermediate liquid carbon dioxide stream into at least one high-pressure accumulation chamber; heating the high pressure accumulation chamber to pressurize the liquid carbon dioxide contained therein to a delivery pressure; delivering a pressurized liquid carbon dioxide stream from the high-pressure accumulation chamber; and, discontinuing delivery of the pressurized liquid carbon dioxide stream for replenishing the high pressure accumulation chamber.Type: GrantFiled: May 6, 2005Date of Patent: June 6, 2006Assignee: The BOC Group, Inc.Inventors: Kelly Leitch, Danny Silveira
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Patent number: 6960242Abstract: A carbon dioxide recovery apparatus and process for supercritical extraction includes providing a process stream from a supercritical extraction procedure in which the process stream includes pressurized carbon dioxide, extraction process waste and optionally at least one co-solvent; reducing the pressure of the process stream below critical pressure; venting low pressure carbon dioxide vapor to exhaust; cooling the process stream to form a two phase mixture; separating the two phase mixture into a process liquid, containing co-solvent if present, and a process vapor phase stream; collecting the process liquid; filtering the process vapor phase stream to remove particulates and optionally residual co-solvent; passing the filtered process vapor stream through an adsorber to remove trace impurities to form a purified carbon dioxide vapor stream; and, drying the purified carbon dioxide vapor stream to remove residual water vapor.Type: GrantFiled: September 25, 2003Date of Patent: November 1, 2005Assignee: The BOC Group, Inc.Inventors: Kelly Leitch, Gavin Hartigan, Robert D'Orazio
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Publication number: 20050198971Abstract: A batch process and apparatus for producing a pressurized liquid carbon dioxide stream includes distilling a feed stream of carbon dioxide vapor off of a liquid carbon dioxide supply; introducing the carbon dioxide vapor feed stream into at least one purifying filter; condensing the purified feed stream within a condenser to form an intermediate liquid carbon dioxide stream; introducing the intermediate liquid carbon dioxide stream into at least one high-pressure accumulation chamber; heating the high pressure accumulation chamber to pressurize the liquid carbon dioxide contained therein to a delivery pressure; delivering a pressurized liquid carbon dioxide stream from the high-pressure accumulation chamber; and, discontinuing delivery of the pressurized liquid carbon dioxide stream for replenishing the high pressure accumulation chamber.Type: ApplicationFiled: May 6, 2005Publication date: September 15, 2005Inventors: Kelly Leitch, Danny Silveira
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Patent number: 6889508Abstract: A batch process and apparatus for producing a pressurized liquid carbon dioxide stream includes distilling a feed stream of carbon dioxide vapor off of a liquid carbon dioxide supply; introducing the carbon dioxide vapor feed stream into at least one purifying filter; condensing the purified feed stream within a condenser to form an intermediate liquid carbon dioxide stream; introducing the intermediate liquid carbon dioxide stream into at least one high-pressure accumulation chamber; heating the high pressure accumulation chamber to pressurize the liquid carbon dioxide contained therein to a delivery pressure; delivering a pressurized liquid carbon dioxide stream from the high-pressure accumulation chamber; and, discontinuing delivery of the pressurized liquid carbon dioxide stream for replenishing the high pressure accumulation chamber.Type: GrantFiled: September 25, 2003Date of Patent: May 10, 2005Assignee: The BOC Group, Inc.Inventors: Kelly Leitch, Danny Silveira
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Publication number: 20040118281Abstract: A carbon dioxide recovery apparatus and process for supercritical extraction includes providing a process stream from a supercritical extraction procedure in which the process stream includes pressurized carbon dioxide, extraction process waste and optionally at least one co-solvent; reducing the pressure of the process stream below critical pressure; venting low pressure carbon dioxide vapor to exhaust; cooling the process stream to form a two phase mixture; separating the two phase mixture into a process liquid, containing co-solvent if present, and a process vapor phase stream; collecting the process liquid; filtering the process vapor phase stream to remove particulates and optionally residual co-solvent; passing the filtered process vapor stream through an adsorber to remove trace impurities to form a purified carbon dioxide vapor stream; and, drying the purified carbon dioxide vapor stream to remove residual water vapor.Type: ApplicationFiled: September 25, 2003Publication date: June 24, 2004Applicant: The BOC Group Inc.Inventors: Kelly Leitch, Gavin Hartigan, Robert D'Orazio
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Publication number: 20040112066Abstract: A batch process and apparatus for producing a pressurized liquid carbon dioxide stream includes distilling a feed stream of carbon dioxide vapor off of a liquid carbon dioxide supply; introducing the carbon dioxide vapor feed stream into at least one purifying filter; condensing the purified feed stream within a condenser to form an intermediate liquid carbon dioxide stream; introducing the intermediate liquid carbon dioxide stream into at least one high-pressure accumulation chamber; heating the high pressure accumulation chamber to pressurize the liquid carbon dioxide contained therein to a delivery pressure; delivering a pressurized liquid carbon dioxide stream from the high-pressure accumulation chamber; and, discontinuing delivery of the pressurized liquid carbon dioxide stream for replenishing the high pressure accumulation chamber.Type: ApplicationFiled: September 25, 2003Publication date: June 17, 2004Inventors: Kelly Leitch, Danny Silveira
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Patent number: 6327872Abstract: The present invention provides a method and apparatus for producing a pressurized high purity liquid carbon dioxide stream in which a feed stream composed of carbon dioxide vapor is purified within a purifying filter and then condensed within a condenser. The result liquid is then alternately introduced and dispensed from two first and second pressure accumulation chambers. The first and second pressure accumulation chambers are heated by electrical heaters to pressurize the liquid to the required or desired delivery pressure of the pressurized liquid carbon dioxide stream. Such stream is alternately extracted from the first and second pressure accumulation chambers on a continuous basis in which one of the first and second pressure accumulation chambers acts in a dispensing role while the other is being filled. The pressurized liquid carbon dioxide stream can be further filtered within a particulate filter.Type: GrantFiled: June 27, 2000Date of Patent: December 11, 2001Assignee: The BOC Group, Inc.Inventors: Robert Walter Boyd, Jessi Lynn Pike, David C. Cheng, Kelly Leitch