Patents by Inventor Wyatt P. Hargett
Wyatt P. Hargett 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: 10695738Abstract: A vessel system for high-pressure reactions is disclosed. The system includes a plugged polymer cylinder reaction vessel with a pressure vent opening extending radially through the wall of the reaction vessel and a supporting frame into which the vessel is received. Complementing keying structure elements on the vessel and on the frame limit the orientation of the reaction vessel in the supporting frame and the radially extending vent opening to a defined single position.Type: GrantFiled: June 21, 2018Date of Patent: June 30, 2020Assignee: CEM CorporationInventors: Ian Goldstein, Wyatt P. Hargett, III
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Publication number: 20190291070Abstract: A combination for carrying out microwave assisted reactions is disclosed, such as acid digestion and solvent extraction. The combination includes a microwave transparent pressure-resistant reaction vessel and a flexible film fluoropolymer liner inside the reaction vessel. The flexible film liner has a size and shape that substantially conforms to the inner walls of the reaction vessel. A pressure-relief closure is positioned on the reaction vessel and the flexible film liner, and an infrared temperature detector that operates in wavelengths (frequencies) to which both the reaction vessel and the flexible liner are transparent, so that an exact fit and conductive heating to the outside of the reaction vessel are not required.Type: ApplicationFiled: March 23, 2018Publication date: September 26, 2019Applicant: CEM CorporationInventors: Wyatt P. Hargett, JR., Michael J. Collins, SR.
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Patent number: 10245575Abstract: A vessel system for high-pressure reactions is disclosed. The system includes a plugged polymer cylinder reaction vessel with a pressure vent opening extending radially through the wall of the reaction vessel and a supporting frame into which the vessel is received. Complementing keying structure elements on the vessel and on the frame limit the orientation of the reaction vessel in the supporting frame and the radially extending vent opening to a defined single position.Type: GrantFiled: April 3, 2018Date of Patent: April 2, 2019Assignee: CEM CorporationInventors: Ian Goldstein, Wyatt P. Hargett, III
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Publication number: 20180297002Abstract: A vessel system for high-pressure reactions is disclosed. The system includes a plugged polymer cylinder reaction vessel with a pressure vent opening extending radially through the wall of the reaction vessel and a supporting frame into which the vessel is received. Complementing keying structure elements on the vessel and on the frame limit the orientation of the reaction vessel in the supporting frame and the radially extending vent opening to a defined single position.Type: ApplicationFiled: June 21, 2018Publication date: October 18, 2018Applicant: CEM CorporationInventors: IAN GOLDSTEIN, WYATT P. HARGETT, III
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Patent number: 10065168Abstract: A vessel system for high-pressure reactions is disclosed. The system includes a plugged polymer cylinder reaction vessel with a pressure vent opening extending radially through the wall of the reaction vessel and a supporting frame into which the vessel is received. Complementing keying structure elements on the vessel and on the frame limit the orientation of the reaction vessel in the supporting frame and the radially extending vent opening to a defined single position.Type: GrantFiled: March 2, 2017Date of Patent: September 4, 2018Assignee: CEM CorporationInventors: Ian Goldstein, Wyatt P. Hargett, III
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Publication number: 20180221845Abstract: A vessel system for high-pressure reactions is disclosed. The system includes a plugged polymer cylinder reaction vessel with a pressure vent opening extending radially through the wall of the reaction vessel and a supporting frame into which the vessel is received. Complementing keying structure elements on the vessel and on the frame limit the orientation of the reaction vessel in the supporting frame and the radially extending vent opening to a defined single position.Type: ApplicationFiled: April 3, 2018Publication date: August 9, 2018Applicant: CEM CorporationInventors: IAN GOLDSTEIN, WYATT P. HARGETT, III
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Publication number: 20170312728Abstract: A vessel system for high-pressure reactions is disclosed. The system includes a plugged polymer cylinder reaction vessel with a pressure vent opening extending radially through the wall of the reaction vessel and a supporting frame into which the vessel is received. Complementing keying structure elements on the vessel and on the frame limit the orientation of the reaction vessel in the supporting frame and the radially extending vent opening to a defined single position.Type: ApplicationFiled: March 2, 2017Publication date: November 2, 2017Applicant: CEM CorporationInventors: IAN GOLDSTEIN, WYATT P. HARGETT, III
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Patent number: 7939785Abstract: An instrument and associated method are disclosed for preparing samples for column chromatography.Type: GrantFiled: January 28, 2008Date of Patent: May 10, 2011Assignee: CEM CorporationInventors: Michael Collins, Sr., Wyatt P. Hargett, Jr., James Edward Thomas, E. Keller Barnhardt, Michael Collins, Jr.
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Patent number: 7816633Abstract: A method and associated instrument are disclosed for increasing the sequential rate at which a series of microwave assisted chemical reactions that potentially generate high pressure can be carried out. The method includes the steps of opening a pressure-resistant valve on a microwave-transparent pressure-resistant vessel to define a unpressurized pathway through the valve into the vessel, inserting a tube through the pathway in the valve and into the vessel, transferring at least one composition into the vessel through the tube, removing the tube from the vessel and from the pathway in the valve, closing the valve to seal the vessel against pressure release, and exposing the vessel and its contents to microwave radiation.Type: GrantFiled: September 11, 2007Date of Patent: October 19, 2010Assignee: CEM CorporationInventors: Wyatt P. Hargett, Jr., James E. Thomas
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Patent number: 7307248Abstract: A method and associated instrument are disclosed for increasing the sequential rate at which a series of microwave assisted chemical reactions that potentially generate high pressure can be carried out.Type: GrantFiled: December 9, 2003Date of Patent: December 11, 2007Assignee: CEM CorporationInventors: Wyatt P. Hargett, Jr., James E. Thomas
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Patent number: 6566637Abstract: A method and associated apparatus are disclosed for microwave assisted content analysis. The method includes the steps of applying microwave radiation to a sample while concurrently rotating the sample while the microwave radiation is being applied and while concurrently weighing the sample and while measuring the temperature of the sample and controlling or moderating the microwaves applied to the sample based upon the measured temperature.Type: GrantFiled: June 28, 2000Date of Patent: May 20, 2003Assignee: CEM CorporationInventors: Robert N. Revesz, James E. Thomas, Wyatt P. Hargett, Jr.
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Patent number: 6462321Abstract: A method and associated apparatus are disclosed for microwave assisted content analysis. The method includes the steps of applying microwave radiation to a sample while concurrently rotating the sample while the microwave radiation is being applied and while concurrently weighing the sample and while measuring the temperature of the sample and controlling or moderating the microwaves applied to the sample based upon the measured temperature.Type: GrantFiled: September 10, 2001Date of Patent: October 8, 2002Assignee: CEM CorporationInventors: Robert N. Revesz, James E. Thomas, Wyatt P. Hargett, Jr.
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Publication number: 20020063128Abstract: A method and associated apparatus are disclosed for microwave assisted content analysis. The method includes the steps of applying microwave radiation to a sample while concurrently rotating the sample while the microwave radiation is being applied and while concurrently weighing the sample and while measuring the temperature of the sample and controlling or moderating the microwaves applied to the sample based upon the measured temperature.Type: ApplicationFiled: September 10, 2001Publication date: May 30, 2002Inventors: Robert N. Revesz, James E. Thomas, Wyatt P. Hargett
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Patent number: 5520886Abstract: Sealable container assemblies include containers for materials which are to be microwave heated, such as in digesting or extracting operations, made of thermoplastic material, such as fluoropolymer, that is strengthened by reinforcing means that may be a fiber reinforced thermoplastic of high tensile strength, such as polyetherimide, with reinforcing continuous fibers in a matrix of such thermoplastic, which fibers are very preferably in the shape of a sleeve or sleeves and are of glass or other heat resistant and microwave transmissive material. The containers may be strengthened by incorporating the fiber reinforced thermoplastic in a wall or walls of the container or preferably by inserting the container into a reinforcement, which is a sleeve or collar of the reinforced thermoplastic. In both such constructions the reinforcing means protects the container against radial failure due to pressure that is generated by the microwave heating of the container contents.Type: GrantFiled: January 14, 1994Date of Patent: May 28, 1996Assignee: CEM CorporationInventors: Jonathan P. Bennett, Wyatt P. Hargett
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Patent number: 5369034Abstract: A ventable container for materials to be heated (preferably digested) by microwave radiation includes a movable rupture diaphragm in a venting passageway in a closure or cover for such container. Such diaphragm is tightenable into place so that the container is sealed and in such sealed state is protected by the rupture diaphragm against pressures that could develop in the container that are higher than that for which it was designed. An important feature of the invention is that the rupture diaphragm is controllably movable, when desired, to open positions to vent the container during heating and afterward, and is resealable after venting. Because of the chemical reactivity of the reagents utilized in digestions an inner chemically resistant liner is desirably employed in conjunction with a physically stronger outer body, with the outer body giving the liner enough strength to withstand pressures developed during the heating.Type: GrantFiled: May 25, 1993Date of Patent: November 29, 1994Assignee: CEM CorporationInventors: Wyatt P. Hargett, Sara E. Littau
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Patent number: 5318754Abstract: An apparatus for use in analyzing materials for ash content includes a walled chamber which retains microwave radiation therein, a source of microwave radiation, such as a magnetron, for radiating onto contents of such chamber, and an ashing furnace in the chamber which includes a heat resistant wall of low thermal conductivity, which is transmissive of microwave radiation, and a microwave absorptive material which is capable of being heated by microwave radiation to an ashing temperature. The furnace includes a passageway through it for the entry into the furnace cavity of a gas, such as air, and for venting gas, such as combustion products, from the furnace cavity, and preferably also includes a removable trapezoidally shaped door in a front wall thereof, which, when the chamber door is open, is readily removable from the furnace by hand, without burning the operator's fingers, despite the high internal temperature in the furnace cavity.Type: GrantFiled: January 15, 1993Date of Patent: June 7, 1994Assignee: CEM CorporationInventors: Michael J. Collins, Wyatt P. Hargett
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Patent number: 5230865Abstract: A ventable container for materials to be heated (preferably digested) by microwave radiation includes a movable rupture diaphragm in a venting passageway in a closure or cover for such container. Such diaphragm is tightenable into place so that the container is sealed and in such sealed state is protected by the rupture diaphragm against pressures that could develop in the container that are higher than that for which it was designed. An important feature of the invention is that the rupture diaphragm is controllably movable, when desired, to open positions to vent the container during heating and afterward, and is resealable after such venting. Because of the chemical reactivity of the reagents utilized in digestions an inner chemically resistant liner is desirably employed in conjunction with a physically stronger outer body, with the outer body giving the liner enough strength to withstand pressures developed during the heating.Type: GrantFiled: September 21, 1992Date of Patent: July 27, 1993Assignee: CEM CorporationInventors: Wyatt P. Hargett, Sara E. Littau
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Patent number: 5206479Abstract: A microwave heating system which is especially useful for rapidly, uniformly and positively sterlizing biological media, such as broths and gels used as incubation or growth media for bacteria, includes a source of microwave radiation, a microwave chamber, a container or a plurality of containers in the chamber, and a mixer for mixing the contents of the container or containers during heating. The mixer is at least partially external to the container and is capable of operating when the container is positively sealed to prevent contamination of the contents, and the mixer is preferably a combination of an external magnet and a mixing element which is at least in part of magnetic material and is moved by changes in the magnetic field set up by the magnet, as the container and contained mixing element are moved with respect to the magnet, as on an oscillating turntable.Type: GrantFiled: May 4, 1990Date of Patent: April 27, 1993Assignee: CEM CorporationInventors: Zairani Zakaria, Edwin D. Neas, Dennis P. Manchester, Wyatt P. Hargett
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Patent number: 4877624Abstract: A valve that opens and closes in response to changes in the physical environment of the valve. This valve is particularly suited as a relief valve in a microwave system-based, closed vessel digestion procedure. This valve includes a pressure-deformable, resilient wall member having a fluid vent port, and an obstructing member that cooperates with the wall member to open and close the valve.Also provided is a lidded vessel employing this improved valve, an apparatus that includes a microwave system and this lidded vessel, and methods using this improved valve.Type: GrantFiled: April 19, 1988Date of Patent: October 31, 1989Assignee: CEM CorporationInventors: Terry S. Floyd, Wyatt P. Hargett, Jr.
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Patent number: 4681996Abstract: An apparatus for controllably heating material, such as a material to be analyzed for volatiles or non-volatiles contents, directly and indirectly by microwave radiation, includes a chamber, in which the material to be heated is placed, a source of microwave radiation, for radiating onto materials in the chamber and for controllably heating such a material, and a support for such material, which support includes a matrix of a material which transmits microwave radiation, and also includes particulate material therein which absorbs microwave radiation. The absorptive material is one that has a Curie temperature, above which it is transmissive of microwave radiation, so as thereby to prevent excessive heating of the support and the supported material which is to be heated. The matrix material is stable and form-retaining at the Curie temperature of the dispersed material.Type: GrantFiled: December 19, 1985Date of Patent: July 21, 1987Assignee: CEM CorporationInventors: Michael J. Collins, Wyatt P. Hargett, Jr.