Patents by Inventor James Edward Thomas
James Edward Thomas 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: 8426783Abstract: An instrument for carrying out controlled microwave assisted chemical processes is particularly useful for handling relatively small samples. The instrument includes a needle, and a needle seal adjacent the needle and having a shaft coaxial with the needle and in communication with the needle. A pressure transducer is opposite the needle seal from the needle and in communication with the shaft. A housing holds the needle to the needle seal and the needle seal to the transducer. A chamber is formed between the housing and the needle seal. A lateral shaft goes through the needle seal from the coaxial shaft to the chamber in the housing, and a valve is in communication with the chamber.Type: GrantFiled: October 8, 2010Date of Patent: April 23, 2013Assignee: CEM CorporationInventors: Edward Earl King, James Edward Thomas
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Publication number: 20120043313Abstract: An instrument is disclosed for carrying out controlled microwave assisted chemical processes, and that is particularly useful for handling relatively small samples. The instrument includes a needle, and a needle seal adjacent the needle and having a shaft coaxial with the needle and in communication with the needle. A pressure transducer is opposite the needle seal from the needle and in communication with the shaft. A housing holds the needle to the needle seal and the needle seal to the transducer. A chamber is formed between the housing and the needle seal. A lateral shaft goes through the needle seal from the coaxial shaft to the chamber in the housing, and a valve is in communication with the chamber.Type: ApplicationFiled: October 8, 2010Publication date: February 23, 2012Inventors: Edward Earl King, James Edward Thomas
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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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Publication number: 20110042372Abstract: An instrument is disclosed for carrying out controlled microwave assisted chemical processes, and that is particularly useful for handling relatively small samples. The instrument includes a needle, and a needle seal adjacent the needle and having a shaft coaxial with the needle and in communication with the needle. A pressure transducer is opposite the needle seal from the needle and in communication with the shaft. A housing holds the needle to the needle seal and the needle seal to the transducer. A chamber is formed between the housing and the needle seal. A lateral shaft goes through the needle seal from the coaxial shaft to the chamber in the housing, and a valve is in communication with the chamber.Type: ApplicationFiled: October 8, 2010Publication date: February 24, 2011Inventors: Edward Earl King, James Edward Thomas
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Patent number: 7829828Abstract: An instrument for carrying out controlled microwave assisted chemical processes, and that is particularly useful for handling relatively small samples. The instrument includes a microwave-transparent reaction vessel with an open mouth, a pressure-resistant seal on the mouth of the vessel, and a needle, portions of which penetrate the seal with a first end of the needle and provide fluid communication into the vessel. A pressure transducer is at the opposite end of the needle and in fluid communication with the interior of the vessel through the needle. The instrument defines a pressure control flow path from a portion of the needle outside of the vessel to a fluid port, the flow path being in communication with the needle, the interior of the vessel and the transducer. A controllable pressure release valve for the flow path is associated with the port.Type: GrantFiled: September 10, 2007Date of Patent: November 9, 2010Assignee: CEM CorporationInventors: Edward Earl King, James Edward Thomas
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Patent number: 7820951Abstract: An instrument for carrying out controlled microwave assisted chemical processes, and that is particularly useful for handling relatively small samples. The instrument includes a microwave-transparent reaction vessel with an open mouth, a pressure-resistant seal on the mouth of the vessel, and a needle, portions of which penetrate the seal with a first end of the needle and provide fluid communication into the vessel. A pressure transducer is at the opposite end of the needle and in fluid communication with the interior of the vessel through the needle. The instrument defines a pressure control flow path from a portion of the needle outside of the vessel to a fluid port, the flow path being in communication with the needle, the interior of the vessel and the transducer. A controllable pressure release valve for the flow path is associated with the port.Type: GrantFiled: September 10, 2007Date of Patent: October 26, 2010Assignee: CEM CorporationInventors: Edward Earl King, James Edward Thomas
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Patent number: 7812291Abstract: An instrument and associated method are disclosed for preparing samples for column chromatography.Type: GrantFiled: July 12, 2006Date of Patent: October 12, 2010Assignee: CEM CorporationInventors: Michael John Collins, Sr., Wyatt Price Hargett, Jr., James Edward Thomas, Michael John Collins, Jr., E. Keller Barnhardt
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Patent number: 7348526Abstract: An instrument and associated method are disclosed for preparing samples for column chromatography.Type: GrantFiled: August 20, 2004Date of Patent: March 25, 2008Assignee: CEM CorporationInventors: Michael John Collins, Sr., Wyatt Price Hargett, Jr., James Edward Thomas, Michael John Collins, Jr., E. Keller Barnhardt
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Patent number: 7282184Abstract: An instrument is disclosed for carrying out controlled microwave assisted chemical processes, and that is particularly useful for handling relatively small samples. The instrument includes a microwave-transparent reaction vessel with an open mouth, a pressure-resistant seal on the mouth of the vessel, and a needle, portions of which penetrate the seal with a first end of the needle and provide fluid communication into the vessel. A pressure transducer is at the opposite end of the needle and in fluid communication with the interior of the vessel through the needle. The instrument defines a pressure control flow path from a portion of the needle outside of the vessel to a fluid port, the flow path being in communication with the needle, the interior of the vessel and the transducer. A controllable pressure release valve for the flow path is-associated with the port.Type: GrantFiled: April 19, 2002Date of Patent: October 16, 2007Assignee: CEM CorporationInventors: Edward Earl King, James Edward Thomas
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Patent number: 7214913Abstract: A controlled-flow microwave instrument for chemical synthesis using heterogeneous or highly viscous starting materials includes a microwave source for generating electromagnetic radiation in the microwave frequencies, a microwave cavity in wave communication with the source for exposing compositions placed therein to microwave radiation, a microwave-transparent pressure resistant reaction vessel in the cavity, a source reservoir for starting materials and related compositions, a pump in communication with the source reservoir for pumping heterogeneous or highly viscous materials from the source reservoir to the reaction vessel, and a pressure-resistant valve between the pump and the reaction vessel for isolating the reaction vessel from the pump and the source reservoir during application of microwave energy to compositions in the vessel and from any resulting high pressures generated therein.Type: GrantFiled: June 13, 2005Date of Patent: May 8, 2007Assignee: CEM, CorporationInventors: Michael John Collins, Jr., Wyatt Price Hargett, Jr., Edward Earl King, Joseph Joshua Lambert, James Edward Thomas
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Patent number: 7208709Abstract: A pressure-measuring vessel system for microwave assisted chemical processes is disclosed. The vessel system includes a pressure resistant vessel that is otherwise transparent to microwave radiation, a pressure-resistant closure for the mouth of the vessel, with portions of the closure including a pressure resistant synthetic membrane, a pressure transducer external to the vessel, and a tube extending from the transducer, through the membrane and into the vessel for permitting the pressure inside the vessel to be applied against the transducer while the closure and membrane otherwise maintain the pressure resistant characteristics of the vessel.Type: GrantFiled: May 12, 2005Date of Patent: April 24, 2007Assignee: CEM CorporationInventors: William Edward Jennings, Wyatt Price Hargett, Jr., James Edward Thomas
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Patent number: 7109452Abstract: A controlled-flow microwave instrument for chemical synthesis that includes heterogeneous or highly viscous materials includes a fluid reservoir for supplying or receiving fluids, a fluid pump in fluid communication with the reservoir for pumping fluids to or from the reservoir, a microwave transparent reaction vessel in fluid communication with the pump for supplying or receiving fluids to or from the pump and the reservoir, a pressure sensor in fluid communication with the reservoir and the vessel for measuring the pressure of fluids in the instrument at the sensor, and a processor in signal communication with the pressure sensor and the pump for controlling the pump and the flow of fluids in the instrument based at least in part on the pressure measured at the sensor.Type: GrantFiled: September 16, 2005Date of Patent: September 19, 2006Assignee: CEM CorporationInventors: Michael John Collins, Jr., Wyatt Price Hargett, Jr., Edward Earl King, Joseph Joshua Lambert, James Edward Thomas
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Patent number: 7041947Abstract: A controlled-flow microwave instrument for chemical synthesis that includes heterogeneous or highly viscous materials. Includes a fluid reservoir for supplying or receiving fluids, a fluid pump in fluid communication with the reservoir for pumping fluids to or from the reservoir, a microwave transparent reaction vessel in fluid communication with the pump for supplying or receiving fluids to or from the pump and the reservoir, a pressure sensor in fluid communication with the reservoir and the vessel for measuring the pressure of fluids in the instrument at the sensor, and a processor in signal communication with the pressure sensor and the pump for controlling the pump and the flow of fluids in the instrument based at least in part on the pressure measured at the sensor.Type: GrantFiled: April 9, 2004Date of Patent: May 9, 2006Assignee: CEM CorporationInventors: Michael John Collins, Jr., Wyatt Price Hargett, Jr., Edward Earl King, Joseph Joshua Lambert, James Edward Thomas
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Patent number: 6989519Abstract: A controlled-flow microwave instrument for chemical synthesis using heterogeneous or highly viscous starting materials includes a microwave source for generating electromagnetic radiation in the microwave frequencies, a microwave cavity in wave communication with the source for exposing compositions placed therein to microwave radiation, a microwave-transparent pressure resistant reaction vessel in the cavity, a source reservoir for starting materials and related compositions, a pump in communication with the source reservoir for pumping heterogeneous or highly viscous materials from the source reservoir to the reaction vessel, and a pressure-resistant valve between the pump and the reaction vessel for isolating the reaction vessel from the pump and the source reservoir during application of microwave energy to compositions in the vessel and from any resulting high pressures generated therein.Type: GrantFiled: September 2, 2003Date of Patent: January 24, 2006Assignee: CEM CorporationInventors: Michael John Collins, Jr., Wyatt Price Hargett, Jr., Edward Earl King, Joseph Joshua Lambert, James Edward Thomas
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Patent number: 6966226Abstract: A pressure-measuring vessel system for microwave assisted chemical processes is disclosed. The vessel system includes a pressure resistant vessel that is otherwise transparent to microwave radiation, a pressure-resistant closure for the mouth of the vessel, with portions of the closure including a pressure resistant synthetic membrane, a pressure transducer external to the vessel, and a tube extending from the transducer, through the membrane and into the vessel for permitting the pressure inside the vessel to be applied against the transducer while the closure and membrane otherwise maintain the pressure resistant characteristics of the vessel.Type: GrantFiled: June 8, 2004Date of Patent: November 22, 2005Assignee: CEM CorporationInventors: William Edward Jennings, Wyatt Price Hargett, Jr., James Edward Thomas
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Patent number: 6886408Abstract: A pressure-measuring vessel system for microwave assisted chemical processes is disclosed. The vessel system includes a pressure resistant vessel that is otherwise transparent to microwave radiation, a pressure-resistant closure for the mouth of the vessel, with portions of the closure including a pressure resistant synthetic membrane, a pressure transducer external to the vessel, and a tube extending from the transducer, through the membrane and into the vessel for permitting the pressure inside the vessel to be applied against the transducer while the closure and membrane otherwise maintain the pressure resistant characteristics of the vessel.Type: GrantFiled: January 31, 2001Date of Patent: May 3, 2005Assignee: CEM CorporationInventors: William Edward Jennings, Wyatt Price Hargett, Jr., James Edward Thomas
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Publication number: 20040221654Abstract: A pressure-measuring vessel system for microwave assisted chemical processes is disclosed. The vessel system includes a pressure resistant vessel that is otherwise transparent to microwave radiation, a pressure-resistant closure for the mouth of the vessel, with portions of the closure including a pressure resistant synthetic membrane, a pressure transducer external to the vessel, and a tube extending from the transducer, through the membrane and into the vessel for permitting the pressure inside the vessel to be applied against the transducer while the closure and membrane otherwise maintain the pressure resistant characteristics of the vessel.Type: ApplicationFiled: June 8, 2004Publication date: November 11, 2004Inventors: William Edward Jennings, Wyatt Price Hargett, James Edward Thomas
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Publication number: 20030199099Abstract: An instrument is disclosed for carrying out controlled microwave assisted chemical processes, and that is particularly useful for handling relatively small samples. The instrument includes a microwave-transparent reaction vessel with an open mouth, a pressure-resistant seal on the mouth of the vessel, and a needle, portions of which penetrate the seal with a first end of the needle and provide fluid communication into the vessel. A pressure transducer is at the opposite end of the needle and in fluid communication with the interior of the vessel through the needle. The instrument defines a pressure control flow path from a portion of the needle outside of the vessel to a fluid port, the flow path being in communication with the needle, the interior of the vessel and the transducer. A controllable pressure release valve for the flow path is-associated with the port.Type: ApplicationFiled: April 19, 2002Publication date: October 23, 2003Inventors: Edward Earl King, James Edward Thomas
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Publication number: 20030170149Abstract: A pressure-measuring vessel system for microwave assisted chemical processes is disclosed. The vessel system includes a pressure resistant vessel that is otherwise transparent to microwave radiation, a pressure-resistant closure for the mouth of the vessel, with portions of the closure including a pressure resistant synthetic membrane, a pressure transducer external to the vessel, and a tube extending from the transducer, through the membrane and into the vessel for permitting the pressure inside the vessel to be applied against the transducer while the closure and membrane otherwise maintain the pressure resistant characteristics of the vessel.Type: ApplicationFiled: January 31, 2001Publication date: September 11, 2003Inventors: William Edward Jennings, Wyatt Price Hargett, James Edward Thomas
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Patent number: 6373040Abstract: A system is disclosed for carrying out microwave assisted chemical reactions. The system includes a source of microwave radiation, a cavity in communication with the source, a plurality of reaction vessels in the cavity, a pressure line in fluid communication with at least one of the reaction vessels, a pressure transducer in communication with the pressure line, an electrical connector for the transducer in a wall of the cavity, and a shield around the connector that prevents microwaves launched into the cavity from interfering with electrical signals transmitted through the connector.Type: GrantFiled: June 5, 2001Date of Patent: April 16, 2002Assignee: CEM CorporationInventor: James Edward Thomas