Patents Assigned to DUPONT INDUSTRIAL BIOSCIENCES USA, LLC
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Patent number: 10800859Abstract: A polymeric blend composition comprising: (a) from about 1 to about 99 wt. % of a polymer; and (b) from about 1 to about 75 wt. % poly alpha-1,3-glucan is disclosed. The addition of alpha-1,3-glucan as a polymer filler can increase the tensile modulus, tensile strength and oxygen barrier properties of the polymeric blend composition.Type: GrantFiled: December 17, 2015Date of Patent: October 13, 2020Assignee: DuPont Industrial Biosciences USA, LLCInventors: Natnael Behabtu, Sandeep Kumar, Jayme L. Paullin
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Patent number: 10793838Abstract: Compositions are disclosed herein comprising poly alpha-1,3-1,6-glucan with a weight average degree of polymerization (DPw) of at least 1000. This glucan polymer comprises at least 30% alpha-1,3 linkages and at least 30% alpha-1,6 linkages. Further disclosed are glucosyltransferase enzymes that synthesize poly alpha-1,3-1,6-glucan. Ether derivatives of poly alpha-1,3-1,6-glucan and methods of using such derivatives as viscosity modifiers are also disclosed.Type: GrantFiled: April 12, 2019Date of Patent: October 6, 2020Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLCInventors: Jayme L. Paullin, Mark S. Payne, T. Joseph Dennes, Yefim Brun, Rakesh Nambiar, Thomas H. Scholz
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Patent number: 10787524Abstract: Compositions comprising oxidized dextran compounds are disclosed herein. Oxidized dextran compounds are produced by contacting dextran under aqueous conditions with at least one N-oxoammonium salt, at least one periodate compound, and/or at least one peroxide compound.Type: GrantFiled: March 28, 2016Date of Patent: September 29, 2020Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLCInventors: Jayme L. Paullin, Rakesh Nambiar
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Patent number: 10774352Abstract: A method for producing insoluble alpha-1,3-glucan is disclosed. Embodiments of the method comprise providing (i) oligosaccharides that comprise alpha-1,3 and alpha-1,6 glycosidic linkages, or (ii) oligosaccharides derived from a glucosyltransferase reaction; and contacting at least water, sucrose, a glucosyltransferase enzyme, and the oligosaccharides provided in the first step. Glucosyltransferase reaction compositions embodying such a method, and insoluble products thereof, are also disclosed. Yield and other product benefits can be realized when practicing the disclosed subject matter.Type: GrantFiled: May 22, 2018Date of Patent: September 15, 2020Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLCInventors: Kevin D. Nagy, Susan Marie Hennessey, Yefim Brun, Michael Reichman
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Patent number: 10774315Abstract: Disclosed herein are glucosyltransferases with modified amino acid sequences. Such engineered enzymes synthesize alpha-glucan products having increased molecular weight. Further disclosed are reactions and methods in which engineered glucosyltransferases are used to produce alpha-glucan.Type: GrantFiled: September 11, 2018Date of Patent: September 15, 2020Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLCInventors: Yougen Li, Ellen D. Semke, Mark S. Payne, Jared B. Parker, Susan Marie Hennessey, Slavko Kralj, Veli Alkan, Richard Bott
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Patent number: 10745369Abstract: An integrated process is useful for producing 2,5-furandicarboxylic acid (FDCA) and/or a derivative thereof from a six-carbon sugar-containing feed. The process includes a) dehydrating a feed containing a six-carbon sugar unit, in the presence of a bromine source and of a solvent, to generate an oxidation feed that contains at least one of 5-hydroxymethylfurfural (HMF) and/or a derivative or derivatives of HMF in the solvent, together with at least one bromine containing species; b) contacting the oxidation feed from step (a) with a metal catalyst and with an oxygen source under oxidation conditions to produce an oxidation product mixture of at least FDCA and/or a derivative thereof, the solvent, and a residual catalyst: c) purifying and separating the mixture obtained in step (b) to obtain FDCA and/or a derivative thereof and the solvent; and d) recycling at least a portion of the solvent obtained in step (c) to step (a).Type: GrantFiled: November 26, 2019Date of Patent: August 18, 2020Assignees: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC, ARCHER DANIELS MIDLAND COMPANYInventors: Stephen J. Howard, Kristina A. Kreutzer, Bhuma Rajagopalan, Eric R. Sacia, Alexandra Sanborn, Brennan Smith
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Patent number: 10738266Abstract: Polysaccharides can be used to provide a liquid composition with desirable rheological properties while being compatible with other ingredients, such as enzymes, that may be used in formulating the liquid composition. The polysaccharides can be i) a colloidal dispersion of poly alpha-1,3-glucan, ii) poly alpha-1,3-glucan fibrids, iii) soy polysaccharide; or iv) a combination thereof.Type: GrantFiled: May 19, 2016Date of Patent: August 11, 2020Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLCInventors: Rakesh Nambiar, Jayme L. Paullin, Ji Yeon Huh, Natnael Behabtu
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Patent number: 10731297Abstract: The disclosure relates to a coating composition that can be applied to a substrate, especially a cellulose substrate. A layer of the coating composition applied to the substrate provides an excellent ink receptive layer and can be used as a coating on paper. The disclosure also relates to aqueous compositions and method for applying the layer of the coating composition onto the substrate.Type: GrantFiled: October 24, 2016Date of Patent: August 4, 2020Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLCInventors: Natnael Behabtu, Xiaoqing Li, Michael Stephen Wolfe
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Publication number: 20200231520Abstract: This disclosure relates to alkylation processes. The process involves providing two or more reaction zones disposed in sequence. In at least the first two reaction zones, olefin mixture comprising C3 and C4 olefins is contacted with isoparaffin comprising isobutane in the presence of sulfuric acid solution under effective alkylation conditions to produce a product mixture comprising spent acid solution and alkylate product, wherein the molar ratio of C3 to C4 olefins in the olefin mixture decreases in each subsequent reaction zone. In the process, the sulfuric acid solution present in a reaction zone contains the spent acid solution produced in the immediately preceding reaction zone.Type: ApplicationFiled: September 14, 2018Publication date: July 23, 2020Applicant: DuPont Industrial Biosciences USA, LLCInventors: Diwakar Rana, Jason Marshall Christian
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Publication number: 20200197895Abstract: This disclosure relates to methods of converting an HF alkylation unit which utilizes HF as a reaction catalyst to a sulfuric acid alkylation unit which utilizes sulfuric acid as a reaction catalyst. This disclosure also relates to a segmented sulfuric acid settler for separating a sulfuric acid phase from a hydrocarbon phase. This disclosure also relates to methods of converting a vertical HF acid settler to a segmented sulfuric acid settler. This disclosure also relates to converted sulfuric acid alkylation units and alkylation processes performed in the converted sulfuric acid alkylation units.Type: ApplicationFiled: August 30, 2018Publication date: June 25, 2020Applicant: DuPont Industrial Biosciences USA, LLCInventors: Christopher Shane Presley, Jason Brent Nunez, Diwakar Rana, William Joseph Schwarzbach, Jr.
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Patent number: 10669490Abstract: This disclosure relates to a process for producing diesel with reduced levels of sulfur. The process involves (a) providing a diesel feed comprising a diesel having a sulfur content in the range of about 20 to about 10,000 wppm; (b) feeding the diesel feed and a hydrogen rich gas to a reaction zone comprising a hydrotreating catalyst to produce a hydrotreated diesel effluent comprising diesel and hydrogen sulfide; and (c) removing hydrogen sulfide from the hydrotreated diesel effluent to produce a diesel product having a sulfur content no more than about 100 wppm; wherein hydrogen consumption in the reaction zone is in the range of about ?150 to about 150 scf/bbl.Type: GrantFiled: January 9, 2017Date of Patent: June 2, 2020Assignee: DuPont Industrial Biosciences USA, LLCInventor: Hasan Dindi
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Patent number: 10639611Abstract: Compositions are disclosed herein comprising poly alpha-1,3-glucan or poly alpha-1,3-1,6-glucan polymer having an open-cell pore structure with an average pore size of about 100 nm to about 3000 nm in diameter. Such polymers have enhanced aqueous liquid absorption capacity, and can be comprised in various products having aqueous liquid absorption function. Methods of preparing glucan polymers of the compositions provided herein are also disclosed.Type: GrantFiled: April 13, 2018Date of Patent: May 5, 2020Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLCInventors: Natnael Behabtu, Rakesh Nambiar
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Patent number: 10633683Abstract: Compositions are disclosed herein comprising at least one dextran ether compound that comprises uncharged, anionic, and/or cationic organic groups. The degree of substitution of one or more dextran ether compounds is about 0.0025 to about 3.0. Dextran from which the disclosed ether compounds can be derived can have a weight-average molecular weight of about 50-200 million Daltons and/or a z-average radius of gyration of about 200-280 nm. Also disclosed are methods of producing dextran ether compounds, as well as methods of using these ether compounds in various applications.Type: GrantFiled: March 28, 2016Date of Patent: April 28, 2020Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLCInventors: Jayme L. Paullin, Rakesh Nambiar
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Patent number: 10633638Abstract: Reactions comprising water, sucrose, and one or more glucosyltransferase enzymes are disclosed herein. Glucosyltransferase enzymes used in these reactions comprise certain motifs allowing production of insoluble poly alpha-1,3-glucan having at least 95% alpha-1,3 glycosidic linkages.Type: GrantFiled: November 14, 2018Date of Patent: April 28, 2020Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLCInventors: Mark S. Payne, Yefim Brun, Richard R. Bott
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Patent number: 10626424Abstract: Recombinant microbial cells comprising an engineered LCDA production pathway that comprises at least one up-regulated long-chain acyl-CoA synthetase (ACoS) are disclosed. These recombinant microbial cells are capable of producing one or more long-chain dicarboxylic acid (LCDA) products from a long-chain fatty acid-comprising substrate. Methods of using recombinant microbial cells to produce LCDAs are also disclosed.Type: GrantFiled: July 20, 2016Date of Patent: April 21, 2020Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLCInventors: Quinn Qun Zhu, Xiaochun Fan, Seung-Pyo Hong, Despina Boughioukou, Dongming Xie, Himanshu H. Dhamankar
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Patent number: 10590450Abstract: Reaction solutions are disclosed herein comprising water, sucrose and a glucosyltransferase enzyme that synthesizes poly alpha-1,3-glucan. The glucosyltransferase enzyme can synthesize insoluble glucan polymer having at least 50% alpha-1,3 glycosidic linkages and a number average degree of polymerization of at least 100. Further disclosed are methods of using such glucosyltransferase enzymes to produce insoluble poly alpha-1,3-glucan.Type: GrantFiled: May 2, 2019Date of Patent: March 17, 2020Assignee: DuPont Industrial Biosciences USA, LLCInventors: Mark S. Payne, Yefim Brun, Hongxian He, Thomas Scholz
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Patent number: 10584233Abstract: Disclosed herein are compositions comprising polysaccharide particles with an average size of about 0.1-10 mm. These particles comprise at least (i) about 50%-90% by weight water or an aqueous solution, and (ii) about 10%-50% by weight insoluble alpha-glucan, or an insoluble cationic ether thereof, comprising alpha-1,3-glycosidic linkages and having a weight-average degree of polymerization (DPw) of at least about 100. Further disclosed are methods of preparing these compositions, as well as systems for storing and/or moving them.Type: GrantFiled: October 12, 2018Date of Patent: March 10, 2020Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLCInventors: Timothy Allan Bell, Dean M. Fake, Scott M. Herkimer, Dhiren V. Patel, Tyler D. Pritchett
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Patent number: 10538499Abstract: An integrated process is described for producing 2,5-furandicarboxylic acid and/or a derivative thereof from a six carbon sugar-containing feed, comprising: a) dehydrating a feed comprising a six-carbon sugar unit, in the presence of a bromine source and of a solvent, to generate an oxidation feed comprised of at least one of 5-hydroxymethylfurfural and/or a derivative or derivatives of 5-hydroxymethylfurfural in the solvent, together with at least one bromine containing species; b) contacting the oxidation feed from step (a) with a metal catalyst and with an oxygen source under oxidation conditions to produce an oxidation product mixture comprising 2,5-furandicarboxylic acid (FDCA) and/or a derivative thereof, the solvent, and a residual catalyst; c) purifying and separating the mixture obtained in step (b) to obtain FDCA and/or a derivative thereof and the solvent; and d) recycling at least a portion of the solvent obtained in step (c) to step (a).Type: GrantFiled: April 13, 2016Date of Patent: January 21, 2020Assignees: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC, ARCHER DANIELS MIDLAND COMPANYInventors: Stephen J. Howard, Kristina A. Kreutzer, Bhuma Rajagopalan, Eric R. Sacia, Alexandra Sanborn, Brennan Smith
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Patent number: 10508268Abstract: Glucosyltransferase enzymes are disclosed herein that produce branched alpha-glucan polymer. Also disclosed, for example, are polynucleotides encoding these enzymes, as well as methods of producing branched alpha-glucan polymer.Type: GrantFiled: April 18, 2018Date of Patent: December 17, 2019Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLCInventors: Mark S. Payne, Yefim Brun, Richard R. Bott
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Patent number: 10472657Abstract: A method is disclosed for hydrolyzing an alpha-1,3 or alpha-1,6 glucosyl-glucose linkage in a saccharide (disaccharide or oligosaccharide). This method comprises contacting the saccharide with an alpha-glucosidase enzyme such as transglucosidase under suitable conditions, during which contacting step the enzyme hydrolyzes at least one alpha-1,3 or alpha-1,6 glucosyl-glucose linkage of the saccharide. This method is useful for reducing the amount of oligosaccharides in a filtrate isolated from a glucan synthesis reaction, for example.Type: GrantFiled: May 24, 2018Date of Patent: November 12, 2019Assignee: DUPONT INDUSTRIAL BIOSCIENCES USA, LLCInventors: Kevin D. Nagy, Erwin F. Columbus-Hago, Jayarama K Shetty, Susan Marie Hennessey, Robert Dicosimo, Ling Hua, Rodrigo Ramirez, Zhongmei Tang, Zheyong Yu