Patents by Inventor Ronald Buford Sheppard
Ronald Buford Sheppard 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: 20220411538Abstract: A process for preparing a recycle cellulose ester and a recycle cellulose ester composition and articles made with such recycle cellulose esters comprising at least one cellulose ester having at least one substituent on an anhydroglucose unit (AU) derived from recycled plastic content syngas are provided. The recycled plastic content syngas can be obtained by gasifying feedstocks containing a solid fossil fuel such as coal, a plastic, and water. The plastic can be post-consumer or postindustrial plastic.Type: ApplicationFiled: August 16, 2022Publication date: December 29, 2022Applicant: Eastman Chemical CompanyInventors: Ronald Buford Sheppard, William Lewis Trapp
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Patent number: 11447576Abstract: A process for preparing a recycle cellulose ester and a recycle cellulose ester composition and articles made with such recycle cellulose esters comprising at least one cellulose ester having at least one substituent on an anhydroglucose unit (AU) derived from recycled plastic content syngas are provided. The recycled plastic content syngas can be obtained by gasifying feedstocks containing a solid fossil fuel such as coal, a plastic, and water. The plastic can be post-consumer or postindustrial plastic.Type: GrantFiled: February 3, 2020Date of Patent: September 20, 2022Assignee: Eastman Chemical CompanyInventors: Ronald Buford Sheppard, William Lewis Trapp
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Publication number: 20220289868Abstract: A process for preparing a recycle cellulose ester and a recycle cellulose ester composition and articles made with such recycle cellulose esters comprising at least one cellulose ester having at least one substituent on an anhydroglucose unit (AU) derived from recycled cellulose ester content syngas are provided. The recycled cellulose ester content syngas can be obtained by gasifying feedstocks containing a solid fossil fuel such as coal, a cellulose ester, and water. The cellulose ester can be post-consumer or post-industrial cellulose ester.Type: ApplicationFiled: September 24, 2020Publication date: September 15, 2022Applicant: Eastman Chemical CompanyInventors: Frederick Leslie Colhoun, Ronald Buford Sheppard, William Lewis Trapp
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Publication number: 20210253943Abstract: Degradable particulate materials are provided that may be utilized in various downhole treatment fluids, such as hydraulic fracturing fluids. In particular, the degradable particulate materials can be formed from cellulose esters that are capable of effectively degrading at specific rates when exposed to the aqueous environments in high temperature wells 149 to 250° C.).Type: ApplicationFiled: May 29, 2019Publication date: August 19, 2021Applicant: Eastman Chemical CompanyInventors: Koushik Ghosh, Ronald Buford Sheppard
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Publication number: 20200247910Abstract: A process for preparing a recycle cellulose ester and a recycle cellulose ester composition and articles made with such recycle cellulose esters comprising at least one cellulose ester having at least one substituent on an anhydroglucose unit (AU) derived from recycled plastic content syngas are provided. The recycled plastic content syngas can be obtained by gasifying feedstocks containing a solid fossil fuel such as coal, a plastic, and water. The plastic can be post-consumer or postindustrial plastic.Type: ApplicationFiled: February 3, 2020Publication date: August 6, 2020Applicant: Eastman Chemical CompanyInventors: Ronald Buford Sheppard, William Lewis Trapp
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Patent number: 10465490Abstract: A fiber delivery system capable of providing cut fiber segments for use in treating an oil and/or gas well. The fiber delivery system can utilize bales of a continuous filamentary tow that are transported to the well site from a remote manufacturing location. At the well site, a multifilament strand can be pulled off the bale, opened, and cut to provide cut fiber segments. The cut fiber segments can be mixed with other well treatment components to create a well treatment medium that is introduced into the well as part of a drilling, stimulation, or cementing process.Type: GrantFiled: July 18, 2016Date of Patent: November 5, 2019Assignee: Eastman Chemical CompanyInventors: Nick Allen Collins, S. M. Bedarul Islam, Brian Douglas Seiler, Ronald Buford Sheppard, Steven Anthony Wilson
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Publication number: 20180016885Abstract: A fiber delivery system capable of providing cut fiber segments for use in treating an oil and/or gas well. The fiber delivery system can utilize bales of a continuous filamentary tow that are transported to the well site from a remote manufacturing location. At the well site, a multifilament strand can be pulled off the bale, opened, and cut to provide cut fiber segments. The cut fiber segments can be mixed with other well treatment components to create a well treatment medium that is introduced into the well as part of a drilling, stimulation, or cementing process.Type: ApplicationFiled: July 18, 2016Publication date: January 18, 2018Applicant: Eastman Chemical CompanyInventors: Nick Allen Collins, S.M. Bedarul Islam, Brian Douglas Seiler, Ronald Buford Sheppard, Steven Anthony Wilson
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Patent number: 9505692Abstract: The invention provides improved energy content in and shaft power recovery from off-gas from xylene oxidation reactions while at the same time minimizing wastewater treatment cost. More shaft power is produced using off-gas than is required to drive the main air compressor, even with preferred, relatively low oxidation temperatures. Simultaneously, an amount of wastewater greater than byproduct water from oxidation of xylene is kept in vapor form and treated along with off-gas pollutants in a self-sustaining (self-fueling) gas-phase thermal oxidative destruction unit. Optionally, off-gas is combined from multiple xylene oxidation reactors, comprising primary and/or secondary oxidation reactors and forming TPA and/or IPA. Optionally, air compressor condensate and caustic scrubber blowdown are used in a TPA process or as utility water, effectively eliminating normal flow of liquid wastewater effluent from a TPA plant.Type: GrantFiled: September 9, 2009Date of Patent: November 29, 2016Assignee: Grupo Petrotemex, S.A. de C.V.Inventors: Raymond Elbert Fogle, III, Ronald Buford Sheppard, Timothy Alan Upshaw, Alan George Wonders
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Patent number: 9493388Abstract: The invention provides improved energy content in and shaft power recovery from off-gas from xylene oxidation reactions while at the same time minimizing wastewater treatment cost. More shaft power is produced using off-gas than is required to drive the main air compressor, even with preferred, relatively low oxidation temperatures. Simultaneously, an amount of wastewater greater than byproduct water from oxidation of xylene is kept in vapor form and treated along with off-gas pollutants in a self-sustaining (self-fueling) gas-phase thermal oxidative destruction unit. Optionally, off-gas is combined from multiple xylene oxidation reactors, comprising primary and/or secondary oxidation reactors and forming TPA and/or IPA. Optionally, air compressor condensate and caustic scrubber blowdown are used in a TPA process or as utility water, effectively eliminating normal flow of liquid wastewater effluent from a TPA plant.Type: GrantFiled: September 9, 2009Date of Patent: November 15, 2016Assignee: Grupo Petrotemex, S.A. de C.V.Inventors: Raymond Elbert Fogle, III, Ronald Buford Sheppard, Timothy Alan Upshaw, Alan George Wonders
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Patent number: 9493389Abstract: The invention provides improved energy content in and shaft power recovery from off-gas from xylene oxidation reactions while at the same time minimizing wastewater treatment cost. More shaft power is produced using off-gas than is required to drive the main air compressor, even with preferred, relatively low oxidation temperatures. Simultaneously, an amount of wastewater greater than byproduct water from oxidation of xylene is kept in vapor form and treated along with off-gas pollutants in a self-sustaining (self-fueling) gas-phase thermal oxidative destruction unit. Optionally, off-gas is combined from multiple xylene oxidation reactors, comprising primary and/or secondary oxidation reactors and forming TPA and/or IPA. Optionally, air compressor condensate and caustic scrubber blowdown are used in a TPA process or as utility water, effectively eliminating normal flow of liquid wastewater effluent from a TPA plant.Type: GrantFiled: September 9, 2009Date of Patent: November 15, 2016Assignee: Grupo Petrotemex, S.A. de C.V.Inventors: Raymond Elbert Fogle, III, Ronald Buford Sheppard, Timothy Alan Upshaw, Alan George Wonders
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Patent number: 9493387Abstract: The invention provides improved energy content in and shaft power recovery from off-gas from xylene oxidation reactions while at the same time minimizing wastewater treatment cost. More shaft power is produced using off-gas than is required to drive the main air compressor, even with preferred, relatively low oxidation temperatures. Simultaneously, an amount of wastewater greater than byproduct water from oxidation of xylene is kept in vapor form and treated along with off-gas pollutants in a self-sustaining (self-fueling) gas-phase thermal oxidative destruction unit. Optionally, off-gas is combined from multiple xylene oxidation reactors, comprising primary and/or secondary oxidation reactors and forming TPA and/or IPA. Optionally, air compressor condensate and caustic scrubber blowdown are used in a TPA process or as utility water, effectively eliminating normal flow of liquid wastewater effluent from a TPA plant.Type: GrantFiled: September 9, 2009Date of Patent: November 15, 2016Assignee: Grupo Petrotemex, S.A. de C.V.Inventors: Raymond Elbert Fogle, III, Ronald Buford Sheppard, Timothy Alan Upshaw, Alan George Wonders
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Publication number: 20120202965Abstract: The invention provides improved energy content in and shaft power recovery from off-gas from xylene oxidation reactions while at the same time minimizing wastewater treatment cost. More shaft power is produced using off-gas than is required to drive the main air compressor, even with preferred, relatively low oxidation temperatures. Simultaneously, an amount of wastewater greater than byproduct water from oxidation of xylene is kept in vapor form and treated along with off-gas pollutants in a self-sustaining (self-fueling) gas-phase thermal oxidative destruction unit. Optionally, off-gas is combined from multiple xylene oxidation reactors, comprising primary and/or secondary oxidation reactors and forming TPA and/or IPA.Type: ApplicationFiled: March 30, 2012Publication date: August 9, 2012Applicant: EASTMAN CHEMICAL COMPANYInventors: Raymond Elbert Fogle, III, Ronald Buford Sheppard, Timothy Alan Upshaw, Alan George Wonders
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Patent number: 8236921Abstract: The invention provides improved energy content in and shaft power recovery from off-gas from xylene oxidation reactions while at the same time minimizing wastewater treatment cost. More shaft power is produced using off-gas than is required to drive the main air compressor, even with preferred, relatively low oxidation temperatures. Simultaneously, an amount of wastewater greater than byproduct water from oxidation of xylene is kept in vapor form and treated along with off-gas pollutants in a self-sustaining (self-fueling) gas-phase thermal oxidative destruction unit. Optionally, off-gas is combined from multiple xylene oxidation reactors, comprising primary and/or secondary oxidation reactors and forming TPA and/or IPA.Type: GrantFiled: March 30, 2012Date of Patent: August 7, 2012Assignee: Eastman Chemical CompanyInventors: Raymond Elbert Fogle, III, Ronald Buford Sheppard, Timothy Alan Upshaw, Alan George Wonders
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Patent number: 8053597Abstract: A process is provided for producing an enriched carboxylic acid compositions produced by contacting composition comprising a carboxylic acid with an enrichment feed in an enrichment zone to form an enriched carboxylic acid composition. This invention also relates to a process and the resulting compositions for removing catalyst from a carboxylic acid composition to produce a post catalyst removal composition.Type: GrantFiled: June 26, 2009Date of Patent: November 8, 2011Assignee: Grupo Petrotemex, S.A. DE C.V.Inventors: Philip Edward Gibson, Kenny Randolph Parker, Ronald Buford Sheppard
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Patent number: 7884233Abstract: A process is provided for producing an enriched carboxylic acid compositions produced by contacting composition comprising a carboxylic acid with an enrichment feed in an enrichment zone to form an enriched carboxylic acid composition. This invention also relates to a process and the resulting compositions for removing catalyst from a carboxylic acid composition to produce a post catalyst removal composition.Type: GrantFiled: June 26, 2009Date of Patent: February 8, 2011Assignee: Eastman Chemical CompanyInventors: Philip Edward Gibson, Kenny Randolph Parker, Ronald Buford Sheppard
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Patent number: 7816556Abstract: Disclosed is an optimized system for more efficiently and economically producing terephthalic acid. The system includes a multi-stage oxidative digestion system for processing an improved initial slurry from primary oxidation. The multi-stage digestion system is capable of adequately purifying the improved initial slurry without requiring significant liquor exchange between primary oxidation and oxidative digestion.Type: GrantFiled: March 1, 2006Date of Patent: October 19, 2010Assignee: Eastman Chemical CompanyInventors: Alan George Wonders, Ronald Buford Sheppard, Thomas Earl Woodruff, Martin De Boer, Raymond Elbert Fogle
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Patent number: 7772424Abstract: Disclosed is an optimized system for more efficiently and economically producing terephthalic acid. The system employs an evaporative removal step downstream of oxidative digestion. The evaporative removal step removes a portion of the liquid phase and promotes precipitation of certain aromatic impurities. By promoting precipitation of certain aromatic impurities, the amount of the precipitated impurities in the recycled solvent is advantageously reduced.Type: GrantFiled: March 1, 2006Date of Patent: August 10, 2010Assignee: Eastman Chemical CompanyInventors: Alan George Wonders, Ronald Buford Sheppard, Thomas Earl Woodruff, Martin De Boer, Raymond Elbert Fogle, Philip Edward Gibson, Kenny Randolph Parker
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Patent number: 7714094Abstract: Disclosed are modified PET polymer compositions and process for making modified PET polymer compositions by reacting purified terephthalic acid and non-hydrogenated isophthalic acid with ethylene glycol. Compositions with acceptable visual appearance, such as clarity and color, can be made at typical modification levels for many packaging application. Disclosed are also shaped articles and the process for making shaped articles of the modified PET polymer composition.Type: GrantFiled: November 15, 2007Date of Patent: May 11, 2010Assignee: Eastman Chemical CompanyInventors: Ronald Buford Sheppard, Brent Alan Tennant
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Publication number: 20100113826Abstract: The invention provides improved energy content in and shaft power recovery from off-gas from xylene oxidation reactions while at the same time minimizing wastewater treatment cost. More shaft power is produced using off-gas than is required to drive the main air compressor, even with preferred, relatively low oxidation temperatures. Simultaneously, an amount of wastewater greater than byproduct water from oxidation of xylene is kept in vapor form and treated along with off-gas pollutants in a self-sustaining (self-fueling) gas-phase thermal oxidative destruction unit. Optionally, off-gas is combined from multiple xylene oxidation reactors, comprising primary and/or secondary oxidation reactors and forming TPA and/or IPA. Optionally, air compressor condensate and caustic scrubber blowdown are used in a TPA process or as utility water, effectively eliminating normal flow of liquid wastewater effluent from a TPA plant.Type: ApplicationFiled: September 9, 2009Publication date: May 6, 2010Applicant: EASTMAN CHEMICAL COMPANYInventors: Raymond Elbert Fogle, III, Ronald Buford Sheppard, Timothy Alan Upshaw, Alan George Wonders
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Publication number: 20100113735Abstract: The invention provides improved energy content in and shaft power recovery from off-gas from xylene oxidation reactions while at the same time minimizing wastewater treatment cost. More shaft power is produced using off-gas than is required to drive the main air compressor, even with preferred, relatively low oxidation temperatures. Simultaneously, an amount of wastewater greater than byproduct water from oxidation of xylene is kept in vapor form and treated along with off-gas pollutants in a self-sustaining (self-fueling) gas-phase thermal oxidative destruction unit. Optionally, off-gas is combined from multiple xylene oxidation reactors, comprising primary and/or secondary oxidation reactors and forming TPA and/or IPA. Optionally, air compressor condensate and caustic scrubber blowdown are used in a TPA process or as utility water, effectively eliminating normal flow of liquid wastewater effluent from a TPA plant.Type: ApplicationFiled: September 9, 2009Publication date: May 6, 2010Applicant: EASTMAN CHEMICAL COMPANYInventors: Raymond Elbert Fogle, III, Ronald Buford Sheppard, Timothy Alan Upshaw, Alan George Wonders