Patents by Inventor David Barclay
David Barclay 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: 11884594Abstract: A method of producing high strength shaped alumina by feeding alumina power into an agglomerator having a shaft with mixers able to displace the alumina power along the shaft, spraying a liquid binder onto the alumina power as it is displaced along the shaft to form a shaped alumina, and calcining the shaped alumina. The shaped alumina produced having a loose bulk density of greater than or equal to 1.20 g/ml, a surface area less than 10 m2/g, impurities of less than 5 ppm of individual metals and less than 9 ppm of impurities in total, and/or crush strength of greater than 12,000 psi.Type: GrantFiled: July 2, 2021Date of Patent: January 30, 2024Inventors: David A. Barclay, Mark M. Chavez
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Publication number: 20230212657Abstract: The present disclosure provides methods, systems and compositions for detecting nucleic acid sequences in a biological sample having a three-dimensional matrix.Type: ApplicationFiled: July 27, 2022Publication date: July 6, 2023Inventors: Evan Daugharthy, Richard Terry, Conor Camplisson, David Barclay, Tyler Miselis, Hong Chen, Shoshoni Droz
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Publication number: 20210403383Abstract: A method of producing high strength shaped alumina by feeding alumina power into an agglomerator having a shaft with mixers able to displace the alumina power along the shaft, spraying a liquid binder onto the alumina power as it is displaced along the shaft to form a shaped alumina, and calcining the shaped alumina. The shaped alumina produced having a loose bulk density of greater than or equal to 1.20 g/ml, a surface area less than 10 m2/g, impurities of less than 5 ppm of individual metals and less than 9 ppm of impurities in total, and/or crush strength of greater than 12,000 psi.Type: ApplicationFiled: July 2, 2021Publication date: December 30, 2021Inventors: David A. Barclay, Mark M. Chavez
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Patent number: 11091396Abstract: A method of producing high strength shaped alumina by feeding alumina power into an agglomerator having a shaft with mixers able to displace the alumina power along the shaft, spraying a liquid binder onto the alumina power as it is displaced along the shaft to form a shaped alumina, and calcining the shaped alumina. The shaped alumina produced having a loose bulk density of greater than or equal to 1.20 g/ml, a surface area less than 10 m2/g, impurities of less than 5 ppm of individual metals and less than 9 ppm of impurities in total, and/or crush strength of greater than 12,000 psi.Type: GrantFiled: May 20, 2017Date of Patent: August 17, 2021Assignee: Sasol (USA) CorporationInventors: David A. Barclay, Mark M. Chavez
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Patent number: 10527530Abstract: A venting cap is disclosed for pressure vessels for microwave-assisted chemistry. The venting cap includes a flexible circular cover for closing the mouth of a reaction vessel, a flexible annular wall depending from the circular cover, and a flexible annular ring at the bottom of the annular wall and parallel to the circular cover for positioning the cap on a reaction vessel. At least one indentation in the circular cover minimizes distortion when any contents of a reaction vessel exert pressure against the cap, and at least one opening in the annular wall provides a ventilation path through the cap when gas pressure in a reaction vessel flexes the cap sufficiently to partially disengage at least a portion of the cap from the mouth of the reaction vessel.Type: GrantFiled: April 12, 2018Date of Patent: January 7, 2020Inventors: David A. Barclay, Joseph J. Lambert, William E. Jennings, David L. Herman
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Publication number: 20190210926Abstract: A method of producing high strength shaped alumina by feeding alumina power into an agglomerator having a shaft with mixers able to displace the alumina power along the shaft, spraying a liquid binder onto the alumina power as it is displaced along the shaft to form a shaped alumina, and calcining the shaped alumina. The shaped alumina produced having a loose bulk density of greater than or equal to 1.20 g/ml, a surface area less than 10 m2/g, impurities of less than 5 ppm of individual metals and less than 9 ppm of impurities in total, and/or crush strength of greater than 12,000 psi.Type: ApplicationFiled: May 20, 2017Publication date: July 11, 2019Inventors: David A. Barclay, Mark M. Chavez
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Patent number: 10067043Abstract: An instrument and method for high pressure microwave assisted chemistry are disclosed. The method includes the steps of applying microwave radiation to a sample in a sealed vessel while measuring the temperature of the sample and measuring the pressure generated inside the vessel and until the measured pressure reaches a designated set point, opening the vessel to release gases until the pressure inside the vessel reaches a lower designated set point, closing the vessel, and repeating the steps of opening the vessel at designated pressure set points and closing the vessel at designated pressure set points to the sample until the sample reaction reaches a designated high temperature. The designated set points can controllably differ from one another as the reaction proceeds. Microwave energy can be applied continuously or intermittently during the opening and closing steps.Type: GrantFiled: December 30, 2016Date of Patent: September 4, 2018Assignee: CEM CorporationInventors: David A. Barclay, Joseph J. Lambert, William E. Jennings, David L. Herman
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Publication number: 20180229208Abstract: A venting cap is disclosed for pressure vessels for microwave-assisted chemistry. The venting cap includes a flexible circular cover for closing the mouth of a reaction vessel, a flexible annular wall depending from the circular cover, and a flexible annular ring at the bottom of the annular wall and parallel to the circular cover for positioning the cap on a reaction vessel. At least one indentation in the circular cover minimizes distortion when any contents of a reaction vessel exert pressure against the cap, and at least one opening in the annular wall provides a ventilation path through the cap when gas pressure in a reaction vessel flexes the cap sufficiently to partially disengage at least a portion of the cap from the mouth of the reaction vessel.Type: ApplicationFiled: April 12, 2018Publication date: August 16, 2018Applicant: CEM CorporationInventors: David A. Barclay, Joseph J. Lambert, William E. Jennings, David L. Herman
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Patent number: 10023785Abstract: A thixotropic agent comprised of a gel which is comprised of a polymeric organic material cross-linked with certain boehmite aluminas having a crystallite size of less than about 100 ? as measured on the 120 plane.Type: GrantFiled: August 22, 2012Date of Patent: July 17, 2018Assignee: Sasol Performance Chemicals GmbHInventor: David A. Barclay
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Patent number: 9943823Abstract: An instrument and method for high pressure microwave assisted chemistry are disclosed. The method includes the steps of applying microwave radiation to a sample in a sealed vessel while measuring the temperature of the sample and measuring the pressure generated inside the vessel and until the measured pressure reaches a designated set point, opening the vessel to release gases until the pressure inside the vessel reaches a lower designated set point, closing the vessel, and repeating the steps of opening the vessel at designated pressure set points and closing the vessel at designated pressure set points to the sample until the sample reaction reaches a designated high temperature. The designated set points can controllably differ from one another as the reaction proceeds. Microwave energy can be applied continuously or intermittently during the opening and closing steps.Type: GrantFiled: December 16, 2015Date of Patent: April 17, 2018Assignee: CEM CorporationInventors: David A. Barclay, Joseph J. Lambert, William E. Jennings, David L. Herman
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Publication number: 20170108415Abstract: An instrument and method for high pressure microwave assisted chemistry are disclosed. The method includes the steps of applying microwave radiation to a sample in a sealed vessel while measuring the temperature of the sample and measuring the pressure generated inside the vessel and until the measured pressure reaches a designated set point, opening the vessel to release gases until the pressure inside the vessel reaches a lower designated set point, closing the vessel, and repeating the steps of opening the vessel at designated pressure set points and closing the vessel at designated pressure set points to the sample until the sample reaction reaches a designated high temperature. The designated set points can controllably differ from one another as the reaction proceeds. Microwave energy can be applied continuously or intermittently during the opening and closing steps.Type: ApplicationFiled: December 30, 2016Publication date: April 20, 2017Applicant: CEM CorporationInventors: David A. Barclay, Joseph J. Lambert, William E. Jennings, David L. Herman
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Patent number: 9340432Abstract: Magnesium aluminate spinels are made by hydrothermally aging an aqueous slurry of a spinel precursor which can be (a) a mixture of boehmite alumina and a magnesium precursor, (b) an aluminum magnesium oxide or hydroxide, and (c) mixtures thereof. At least one of the aged slurries is dried to remove water and produce at least one dried spinel precursor. The dried spinel precursor is then calcined to produce the magnesium aluminate spinel.Type: GrantFiled: April 15, 2013Date of Patent: May 17, 2016Assignee: Sasol Performance Chemicals GmbHInventors: Brian Peoples, David Barclay, Mark Chavez, Allison Hann, Andrea Brasch, Klaus P. G. Diblitz
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Publication number: 20160096162Abstract: An instrument and method for high pressure microwave assisted chemistry are disclosed. The method includes the steps of applying microwave radiation to a sample in a sealed vessel while measuring the temperature of the sample and measuring the pressure generated inside the vessel and until the measured pressure reaches a designated set point, opening the vessel to release gases until the pressure inside the vessel reaches a lower designated set point, closing the vessel, and repeating the steps of opening the vessel at designated pressure set points and closing the vessel at designated pressure set points to the sample until the sample reaction reaches a designated high temperature. The designated set points can controllably differ from one another as the reaction proceeds. Microwave energy can be applied continuously or intermittently during the opening and closing steps.Type: ApplicationFiled: December 16, 2015Publication date: April 7, 2016Applicant: CEM CorporationInventors: David A. Barclay, Joseph J. Lambert, William E. Jennings, David L. Herman
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Patent number: 9237608Abstract: An instrument and method for high pressure microwave assisted chemistry are disclosed. The method includes the steps of applying microwave radiation to a sample in a sealed vessel while measuring the temperature of the sample and measuring the pressure generated inside the vessel and until the measured pressure reaches a designated set point, opening the vessel to release gases until the pressure inside the vessel reaches a lower designated set point, closing the vessel, and repeating the steps of opening the vessel at designated pressure set points and closing the vessel at designated pressure set points to the sample until the sample reaction reaches a designated high temperature. The designated set points can controllably differ from one another as the reaction proceeds. Microwave energy can be applied continuously or intermittently during the opening and closing steps.Type: GrantFiled: August 14, 2009Date of Patent: January 12, 2016Assignee: CEM CorporationInventors: David A. Barclay, Joseph J Lambert, William E. Jennings, David L. Herman
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Publication number: 20150324715Abstract: A method and system for measuring financial risk in logistics transactions is disclosed. Historical data from processing logistics transactions is reviewed with analysis tools to determine risk scores in key areas. The method may be updated for new components representing high risk in logistics and to refresh risk scores periodically. In embodiments, a module generates risk score results for a given client profile, which may include actual or estimated inputs for both activity levels and a control configuration. Control configuration inputs include not only the basic controls in place for risk mitigation, but also the data enhancements applied for every control as implemented by the client. The client data inputs originate from shippers, logistics service providers, financiers, auditors or other logistics ecosystem partners. The outputs include quantified risk score results in various formats, which may be accessed by computer, smart phone, tablet, mobile device, or via an Internet browser.Type: ApplicationFiled: May 12, 2014Publication date: November 12, 2015Inventors: JERALD SCOTT NELSON, ALAN DOUGLAS CHUTE, DAVID BARCLAY BRUCE HENDERSON, ANTHONY LORON WOOTEN
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Publication number: 20150183651Abstract: Magnesium aluminate spinels are made by hydrothermally aging an aqueous slurry of a spinel precursor which can be (a) a mixture of boehmite alumina and a magnesium precursor, (b) an aluminum magnesium oxide or hydroxide, and (c) mixtures thereof. At least one of the aged slurries is dried to remove water and produce at least one dried spinel precursor. The dried spinel precursor is then calcined to produce the magnesium aluminate spinel.Type: ApplicationFiled: April 15, 2013Publication date: July 2, 2015Inventors: Brian Peoples, David Barclay, Mark Chavez, Allison Hann, Andrea Brasch, Klaus P. G. Diblitz
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Publication number: 20150021033Abstract: A thixotropic agent comprised of a gel which is comprised of a polymeric organic material cross-linked with certain boehmite aluminas having a crystallite size of less than about 100 ? as measured on the 120 plane.Type: ApplicationFiled: August 22, 2012Publication date: January 22, 2015Inventor: David A. Barclay
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Patent number: 8921119Abstract: A method of conducting microwave-assisted high pressure high temperature chemistry is disclosed. The method includes the steps of digesting a sample in a strong acid at a temperature of at least 200° C. in a pressure resistant vessel that includes a lid while exerting a defined force against the lid in order to maintain gases under pressure in the vessel; directing gas under excess pressure from the vessel into a circumferential passage defined by the vessel and its pressure resistant lid; and directing the gas from the circumferential passage outwardly from the lid while preventing gas from flowing outwardly over the edge of the vessel.Type: GrantFiled: October 1, 2010Date of Patent: December 30, 2014Assignee: CEM CorporationInventors: Wyatt Hargett, Jr., David Barclay
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Patent number: 8390473Abstract: The present application is directed to a system and method of providing flexible real-time two-way energy control and monitoring between utility providers and consumers. Consumer friendly nodes permit communication of targeted information and control, while permitting the utility provider to remotely communicate and control in a real-time environment. Data collection of and accessibility by a community of utility consumers provides social feedback through comparative usage statistics.Type: GrantFiled: October 19, 2009Date of Patent: March 5, 2013Assignee: Openpeak Inc.Inventors: Paul Krzyzanowski, David Barclay
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Publication number: 20120074136Abstract: An instrument and method for high pressure microwave assisted chemistry are disclosed. The method includes the steps of applying microwave radiation to a sample in a sealed vessel while measuring the temperature and pressure generated inside the vessel and until the measured pressure reaches a designated set point, opening the vessel to release gases until the pressure inside the vessel reaches a lower set point, closing the vessel, and repeating the steps of opening the vessel at designated pressure set points and closing the vessel at designated pressure set points to the sample until the sample reaction reaches a designated high temperature. Microwave energy can be applied continuously or intermittently during the opening and closing steps. Among other items, the instrument includes pressure and temperature sensors and means for opening and closing the vessel at the set points.Type: ApplicationFiled: September 22, 2011Publication date: March 29, 2012Applicant: CEM CORPORATIONInventors: David A. Barclay, Joseph J. Lambert, William E. Jennings, David L. Herman