Patents by Inventor David Charles Winchester
David Charles Winchester 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: 10892132Abstract: Xenon is contained within articles of manufacture such as light bulbs. Described herein are an apparatus, system, a method to capture and collect the xenon contained in articles of manufacture such as defective light bulbs for recovery and/or reuse.Type: GrantFiled: September 26, 2014Date of Patent: January 12, 2021Assignee: Versum Materials US, LLCInventors: Christopher Michael Albright, Andrew David Johnson, David Charles Winchester
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Patent number: 9649590Abstract: Process gas(es), such as but not limited to helium, can be used in the manufacture of a variety of objects. Described herein are methods to collect, reuse, and recycle the process gas(es) that are used in the production process rather than treat these materials as waste.Type: GrantFiled: December 11, 2014Date of Patent: May 16, 2017Assignee: VERSUM MATERIALS US, LLCInventors: Christopher Michael Albright, Gregory Khosrov Arslanian, Andrew David Johnson, David Charles Winchester
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Publication number: 20160116364Abstract: A leak test apparatus for leak testing a tank including a gas supply system configured to provide to the tank a leak detection gas mixture including hydrogen, a test chamber having a cavity for sealably enclosing the tank such that dead space exists outside the tank and within the cavity, and a gas conduit configured to interconnect the gas supply system and the tank, a control system including a controller programmed to pressurize the tank with the leak detection mixture by flowing gas from the gas supply system through the gas conduit, and a leak detector to determine the presence or absence of a leak in the tank by measuring a concentration of hydrogen in the dead space.Type: ApplicationFiled: October 24, 2014Publication date: April 28, 2016Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Brian Thomas Vaccaro, Jeffrey Michael Barna, David Charles Winchester, David John Farese, Robert Kevin Wagner, Brian Elwin Miller, Christopher Michael Albright, Lucas Anthony White
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Publication number: 20150196870Abstract: Process gas(es), such as but not limited to helium, can be used in the manufacture of a variety of objects. Described herein are methods to collect, reuse, and recycle the process gas(es) that are used in the production process rather than treat these materials as waste.Type: ApplicationFiled: December 11, 2014Publication date: July 16, 2015Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Christopher Michael Albright, Gregory Khosrov Arslanian, Andrew David Johnson, David Charles Winchester
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Publication number: 20150099416Abstract: Xenon is contained within articles of manufacture such as light bulbs. Described herein are an apparatus, system, a method to capture and collect the xenon contained in articles of manufacture such as defective light bulbs for recovery and/or reuse.Type: ApplicationFiled: September 26, 2014Publication date: April 9, 2015Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Christopher Michael Albright, Andrew David Johnson, David Charles Winchester
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Publication number: 20140196664Abstract: Condensable materials, such as but not limited to tungsten fluoride (WF6), can be used deposit films in a chemical vapor deposition (CVD) process. Described herein are methods to collect and reuse the condensable materials that are unreacted in the production process rather than treat these materials as waste. In one embodiment, when a condensable material, such as gaseous WF6, is not supplied to the CVD reactor, it is redirected to a recovery cabinet for capture.Type: ApplicationFiled: January 7, 2014Publication date: July 17, 2014Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: Andrew David Johnson, Rajiv Krishan Agarwal, Heui-Bok Ahn, William Jack Casteel, JR., Eugene Joseph Karwacki, JR., John Francis Lehmann, David Charles Winchester
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Patent number: 8591634Abstract: An apparatus and process for recovering a desired gas such as xenon difluoride, xenon, argon, helium or neon, from the effluent of a chemical process reactor that utilizes such gases alone or in a gas mixture or in a molecule that becomes decomposed wherein the chemical process reactor uses a sequence of different gas composition not all of which contain the desired gas and the desired gas is captured and recovered substantially only during the time the desired gas is in the effluent.Type: GrantFiled: January 19, 2011Date of Patent: November 26, 2013Assignee: Air Products and Chemicals, Inc.Inventors: David Charles Winchester, Matthew John Bosco, Gerald W. Klein, Isaac Patrick West, Richard Linton Samsal, Douglas Paul Dee, Andrew David Johnson, Eugene Joseph Karwacki, Jr.
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Patent number: 8535414Abstract: The present invention discloses the improvements to a vacuum swing adsorption (VSA) process used for Xe recovery. By only collecting the recovered gas mixture after the initial evacuation of N2 from the adsorbent vessel and void space, the recovered Xe is not diluted by N2 contained in the adsorbent vessel and void space. The concentration of the recovered Xe can by increased (high purity), simultaneously little Xenon is lost. During the initial evacuation of N2, the vessel has been evacuated to a pressure less than 1 atmospheric pressure, for example, from 100 to 1 torr.Type: GrantFiled: September 19, 2011Date of Patent: September 17, 2013Assignee: Air Products and Chemicals, Inc.Inventors: Andrew David Johnson, Richard Vincent Pearce, Thomas Stephen Farris, Timothy Christopher Golden, Matthew John Bosco, Eugene Joseph Karwacki, Jr., David Charles Winchester, Jeffrey Raymond Hufton
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Publication number: 20120079939Abstract: The present invention discloses the improvements to a vacuum swing adsorption (VSA) process used for Xe recovery. By only collecting the recovered gas mixture after the initial evacuation of N2 from the adsorbent vessel and void space, the recovered Xe is not diluted by N2 contained in the adsorbent vessel and void space. The concentration of the recovered Xe can by increased (high purity), simultaneously little Xenon is lost. During the initial evacuation of N2, the vessel has been evacuated to a pressure less than 1 atmospheric pressure, for example, from 100 to 1 torr.Type: ApplicationFiled: September 19, 2011Publication date: April 5, 2012Applicant: Air Products and Chemicals, Inc.Inventors: Andrew David Johnson, Richard Vincent Pearce, Thomas Stephen Farris, Timothy Christopher Golden, Matthew John Bosco, Eugene Joseph Karwacki, JR., David Charles Winchester, Jeffrey Raymond Hufton
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Publication number: 20120012201Abstract: An apparatus and process for recovering a desired gas such as xenon difluoride, xenon, argon, helium or neon, from the effluent of a chemical process reactor that utilizes such gases alone or in a gas mixture or in a molecule that becomes decomposed wherein the chemical process reactor uses a sequence of different gas composition not all of which contain the desired gas and the desired gas is captured and recovered substantially only during the time the desired gas is in the effluent.Type: ApplicationFiled: January 19, 2011Publication date: January 19, 2012Applicant: AIR PRODUCTS AND CHEMICALS, INC.Inventors: David Charles Winchester, Matthew John Bosco, Gerald W. Klein, Isaac Patrick West, Richard Linton Samsal, Douglas Paul Dee, Andrew David Johnson, Eugene Joseph Karwacki, JR.