Patents by Inventor John E. Sawyer
John E. Sawyer 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: 20200290902Abstract: An apparatus comprising copper and zinc adhered to reticulated foam is useful for repelling or preventing mollusk infestation.Type: ApplicationFiled: May 11, 2020Publication date: September 17, 2020Applicant: 060Bio, LLCInventors: John E. Sawyer, Paul Gregory Coxe
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Patent number: 9573874Abstract: Technical grade acrylic acid derived from renewable resources utilizing a base catalyst system by a process including reacting lactide (or lactic acid oligomers) with methyl acetate to form methyl 2-acetoxypropionate in the presence of a base catalyst such as sodium methoxide, pyrolyzing the methyl 2-acetoxypropionate, with or without a catalyst, to methyl acrylate and acetic acid, transesterifying the mixture to acrylic acid and methyl acetate, separating and purifying the acrylic acid by distillation late in the presence of polymerization inhibitor(s). The disclosed process will produce a “green” (i.e. renewable resources derived) acrylic acid and/or methyl acrylate ester.Type: GrantFiled: April 17, 2014Date of Patent: February 21, 2017Assignee: SGA Polymers, LLCInventors: Olan Stanley Fruchey, Thomas A. Maliszewski, John E. Sawyer
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Publication number: 20160083323Abstract: Technical grade acrylic acid derived from renewable resources utilizing a base catalyst system by a process including reacting lactide (or lactic acid oligomers) with methyl acetate to form mist methyl 2-acetoxypropionate in the presence of a base catalyst such as sodium methoxide, pyrolyzing the methyl 2-acetoxypropionate, with or without a catalyst, to methyl acrylate and acetic acid, transesterifying the mixture to acrylic acid and methyl acetate, separating and purifying the acrylic acid by distillation late in the presence of polymerization inhibitor(s). The disclosed process will produce a “green” (i.e. renewable resources derived) acrylic acid and/or methyl acrylate ester.Type: ApplicationFiled: April 17, 2014Publication date: March 24, 2016Applicant: SGA POLYMERS, LLCInventors: Olan Stanley Fruchey, Thomas A. Maliszewski, John E. Sawyer
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Patent number: 9290430Abstract: Technical grade acrylic acid derived from renewable resources utilizing a homogeneous nickel catalyst system by a process including reacting lactide with acetic acid to form 2-acetoxypropionic acid in the presence of a homogeneous nickel catalyst, pyrolyzing, with or without a catalyst, the 2-acetoxypropionic acid to acrylic acid and acetic acid, condensing and collecting the pyrolysis products in the presence of polymerization inhibitor(s) and purifying the acrylic acid by distillation in the presence of polymerization inhibitor(s). Acrylic acid and methyl acrylate are produced from methyl 2-acetoxypropionate which comes from fermentation derived lactic acid. The disclosed process will produce a “green” (i.e. renewable resources derived) acrylic acid and methyl acrylate ester.Type: GrantFiled: April 20, 2015Date of Patent: March 22, 2016Assignee: SGA Polymers, LLCInventors: Olan S. Fruchey, Thomas A. Malisezewski, John E. Sawyer
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Publication number: 20150232404Abstract: Technical grade acrylic acid derived from renewable resources utilizing a homogeneous nickel catalyst system by a process including reacting lactide with acetic acid to form 2-acetoxypropionic acid in the presence of a homogeneous nickel catalyst, pyrolyzing, with or without a catalyst, the 2-acetoxypropionic acid to acrylic acid and acetic acid, condensing and collecting the pyrolysis products in the presence of polymerization inhibitor(s) and purifying the acrylic acid by distillation in the presence of polymerization inhibitor(s). Acrylic acid and methyl acrylate are produced from methyl 2-acetoxypropionate which comes from fermentation derived lactic acid. The disclosed process will produce a “green” (i.e. renewable resources derived) acrylic acid and methyl acrylate ester.Type: ApplicationFiled: April 20, 2015Publication date: August 20, 2015Inventors: Olan S. Fruchey, Thomas A. Malisezewski, John E. Sawyer
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Patent number: 9012686Abstract: Technical grade acrylic acid derived from renewable resources utilizing a homogeneous nickel catalyst system by a process including reacting lactide with acetic acid to form 2-acetoxypropionic acid in the presence of a homogeneous nickel catalyst, pyrolyzing, with or without a catalyst, the 2-acetoxypropionic acid to acrylic acid and acetic acid, condensing and collecting the pyrolysis products in the presence of polymerization inhibitor(s) and purfying the acrylic acid by distillation in the presence of polymerization inhibitor(s). Acrylic acid and methyl acrylate are produced from methyl 2-acetoxypropionate which comes from fermentation derived lactic acid. The disclosed process will produce a “green” (i.e. renewable resources derived) acrylic acid and methyl acrylate ester.Type: GrantFiled: September 6, 2011Date of Patent: April 21, 2015Inventors: Olan S. Fruchey, Thomas A. Malisezewski, John E. Sawyer
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Publication number: 20140021135Abstract: A process for a purification of water with multiple contaminants including dissolved solids. The process may involve one or more steps of separating oil and water, metals precipitation, dissolved air flotation (DAF), filtration, forward or reverse osmosis and crystallization. An improved DAF unit is described which increases air dissolution to oxidize impurities and improve flotation. Various embodiments of staged osmotic membrane systems are provided to generate an essentially pure water stream and a highly concentrated solute stream. In some embodiments, reverse osmosis and nanofiltration units are employed in a staged manner. In other embodiments, all stages are reverse osmosis units and the osmotic pressure of each stage is adjusted by the provision of a solution on the low pressure side of the reverse osmosis membrane using nanofiltration membranes. Various recycle options are employed to improve the efficiency of the systems.Type: ApplicationFiled: March 27, 2012Publication date: January 23, 2014Applicant: LIBERTY HYDRO, INC.Inventors: John E. Sawyer, Arthur L. Lucas, Vincent Maurice Davis, Bernard Duane Dombek, George Ernest Keller, II
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Publication number: 20120145635Abstract: The present invention provides for a process for treating water with multiple contaminants. The process includes filtering the water to remove relatively large particulates and immiscible organic fluids. The pH of the water is adjusted. Components such as sulfates are added to precipitate heavy metals. Any suspended solids and residual organic compounds are removed with an enhanced air flotation device. The resulting water is then passed through a reverse osmosis system whereby the water is treated in a cascading stage-wise manner with one or more selective membrane units.Type: ApplicationFiled: October 14, 2011Publication date: June 14, 2012Inventors: Arthur L. Lucas, III, John E. Sawyer
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Publication number: 20120078004Abstract: Technical grade acrylic acid derived from renewable resources utilizing a homogeneous nickel catalyst system by a process including reacting lactide with acetic acid to form 2-acetoxypropionic acid in the presence of a homogeneous nickel catalyst, pyrolyzing, with or without a catalyst, the 2-acetoxypropionic acid to acrylic acid and acetic acid, condensing and collecting the pyrolysis products in the presence of polymerization inhibitor(s) and purfying the acrylic acid by distillation in the presence of polymerization inhibitor(s). Acrylic acid and methyl acrylate are produced from methyl 2-acetoxypropionate which comes from fermentation derived lactic acid. The disclosed process will produce a “green” (i.e. renewable resources derived) acrylic acid and methyl acrylate ester.Type: ApplicationFiled: September 6, 2011Publication date: March 29, 2012Inventors: Olan S. Fruchey, Thomas A. Maliszewski, John E. Sawyer
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Patent number: 5849255Abstract: A high activity catalyst and the method of using it to effectively convert the hydrocarbon, soluble oil fraction and carbon monoxide in a diesel exhaust stream while minimizing the oxidation of SO.sub.2 is disclosed. The catalyst comprises at least one platinum group metal dispersed on a two-component support comprising in major amount one or more zeolites and in minor amount an inorganic oxide selected from the group consisting of alumina, titania and mixtures thereof.Type: GrantFiled: June 5, 1996Date of Patent: December 15, 1998Assignee: ASEC ManufacturingInventors: John E. Sawyer, Jack C. Summers, II