Patents by Inventor Kenneth Barrett
Kenneth Barrett 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: 20260103731Abstract: The present disclosure concerns a process for fermenting a biomass with a reduced dose of a purified exogenous enzyme (which can be, for example a purified exogenous glucoamylase). The process comprises contacting a biomass (which may comprise starch) with a recombinant yeast host cell. The recombinant yeast host cell has a genetic modification for expressing a heterologous polypeptide having starch or dextrin hydrolase activity (which may be, for example, from a glucoamylase). The nucleic acid molecule encoding the heterologous polypeptide having starch or dextrin hydrolase activity comprises allowing the secretion of the heterologous polypeptide.Type: ApplicationFiled: December 11, 2025Publication date: April 16, 2026Applicant: DANSTAR FERMENT AGInventors: Aaron ARGYROS, Alexandra PANAITIU, Charles RICE, Matthew B. RICHARDS, Tera STOUGHTENGER, Kenneth BARRETT
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Patent number: 12529079Abstract: The present disclosure concerns a process for fermenting a biomass with a reduced dose of a purified exogenous enzyme (which can be, for example a purified exogenous glucoamylase). The process comprises contacting a biomass (which may comprise starch) with a recombinant yeast host cell. The recombinant yeast host cell has a genetic modification for expressing a heterologous polypeptide having starch or dextrin hydrolase activity (which may be, for example, from a glucoamylase). The nucleic acid molecule encoding the heterologous polypeptide having starch or dextrin hydrolase activity comprises allowing the secretion of the heterologous polypeptide.Type: GrantFiled: November 25, 2020Date of Patent: January 20, 2026Assignee: Danstar Ferment AGInventors: Aaron Argyros, Alexandra Panaitiu, Charles Rice, Matthew B. Richards, Tera Stoughtenger, Kenneth Barrett
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Patent number: 11634698Abstract: Disclosed herein are polypeptides having nuclease activity. Some of the polypeptides having nuclease activity were generated by an improved gene site mutagenesis (“GSSM”) method or the tailored multi-site combinatorial assembly (“TMCA”) method. Also disclosed are compositions and kits comprising the polypeptides having nuclease activity, and methods for making and using these polypeptides, compositions and kits.Type: GrantFiled: December 10, 2018Date of Patent: April 25, 2023Assignee: BASF SEInventors: Xuqiu Tan, Kenneth Barrett, Jared Dennis, Dongmei Ren, Corey Dodge, Bin Zhang
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Patent number: 11286621Abstract: Embodiments disclosed herein provide enzymatic formulations comprising a polypeptide having amylase activity for producing a paper product. Also provided are aqueous surface treatment compositions for paper and board comprising degraded starch. Further provided are methods for producing paper and board using the aqueous surface treatment composition, and to corrugated boards produced from this paper.Type: GrantFiled: August 12, 2016Date of Patent: March 29, 2022Assignee: BASF SEInventors: Christoph Hamers, Konstantino Karanikas, Kenneth Barrett, Zheng Tan
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Patent number: 11198881Abstract: The present disclosure concerns recombinant yeast host cell for saccharification of a biomass. The recombinant yeast host cell has a genetic modification for expressing a heterologous polypeptide having glucoamylase activity (Rasamsonia emersonii glucoamylase). In some embodiments, the heterologous polypeptide comprises the signal sequence associated with the alpha-mating 1 factor. The present disclosure also concerns a process for saccharification of a biomass using the recombinant yeast host cell as well as a process for fermenting the saccharified biomass into a fermentation product.Type: GrantFiled: November 25, 2020Date of Patent: December 14, 2021Assignees: Lallemand Hungary Liquidity Management LLC, BASF SEInventors: Aaron Argyros, Alexandra Panaitiu, Charles Rice, Kenneth Barrett
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Publication number: 20210163967Abstract: The present disclosure concerns recombinant yeast host cell for saccharification of a biomass. The recombinant yeast host cell has a genetic modification for expressing a heterologous polypeptide having glucoamylase activity (Rasamsonia emersonii glucoamylase). In some embodiments, the heterologous polypeptide comprises the signal sequence associated with the alpha-mating 1 factor. The present disclosure also concerns a process for saccharification of a biomass using the recombinant yeast host cell as well as a process for fermenting the saccharified biomass into a fermentation product.Type: ApplicationFiled: November 25, 2020Publication date: June 3, 2021Inventors: Aaron Argyros, Alexandra Panaitiu, Charles Rice, Kenneth Barrett
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Publication number: 20210163995Abstract: The present disclosure concerns a process for fermenting a biomass with a reduced dose of a purified exogenous enzyme (which can be, for example a purified exogenous glucoamylase). The process comprises contacting a biomass (which may comprise starch) with a recombinant yeast host cell. The recombinant yeast host cell has a genetic modification for expressing a heterologous polypeptide having starch or dextrin hydrolase activity (which may be, for example, from a glucoamylase). The nucleic acid molecule encoding the heterologous polypeptide having starch or dextrin hydrolase activity comprises allowing the secretion of the heterologous polypeptide.Type: ApplicationFiled: November 25, 2020Publication date: June 3, 2021Inventors: Aaron Argyros, Alexandra Panaitiu, Charles Rice, Matthew B. Richards, Tera Stoughtenger, Kenneth Barrett
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Publication number: 20210139871Abstract: Disclosed herein are polypeptides having nuclease activity. Some of the polypeptides having nuclease activity were generated by an improved gene site mutagenesis (“GSSM”) method or the tailored multi-site combinatorial assembly (“TMCA”) method. Also disclosed are compositions and kits comprising the polypeptides having nuclease activity, and methods for making and using these polypeptides, compositions and kits.Type: ApplicationFiled: December 10, 2018Publication date: May 13, 2021Inventors: Xuqiu TAN, Kenneth BARRETT, Jared DENNIS, Dongmei REN, Corey DODGE, Bin ZHANG
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Publication number: 20190376052Abstract: The invention relates to polypeptides having glucanase, e.g., endoglucanase, mannanase, xylanase activity or a combination of these activities, and polynucleotides encoding them. In one aspect, the glucanase activity is an endoglucanase activity (e.g., endo-1,4-beta-D-glucan 4-glucano hydrolase activity) and comprises hydrolysis of 1,4-beta-D-glycosidic linkages in cellulose, cellulose derivatives (e.g., carboxy methyl cellulose and hydroxy ethyl cellulose) lichenin, beta-1,4 bonds in mixed beta-1,3 glucans, such as cereal beta-D-glucans or xyloglucans and other plant material containing cellulosic parts. In addition, methods of designing new enzymes and methods of use thereof are also provided. In alternative aspects, the new glucanases e.g., endoglucanases, mannanases, xylanases have increased activity and stability, including thermotolerance or thermostability, at increased or decreased pHs and temperatures.Type: ApplicationFiled: May 28, 2019Publication date: December 12, 2019Inventors: Brian Steer, Shaun Healey, Alireza Esteghlalian, Stacy Marie Miles, Kenneth Barrett, Rene Quadt
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Publication number: 20190271115Abstract: Embodiments disclosed herein provide enzymatic formulations comprising a polypeptide having amylase activity for producing a paper product. Also provided are aqueous surface treatment compositions for paper and board comprising degraded starch. Further provided are methods for producing paper and board using the aqueous surface treatment composition, and to corrugated boards produced from this paper.Type: ApplicationFiled: August 12, 2016Publication date: September 5, 2019Applicant: BASF SEInventors: Christoph HAMERS, Konstantino KARANIKAS, Kenneth BARRETT, Zheng TAN
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Patent number: 10329549Abstract: The invention relates to polypeptides having glucanase, e.g., endoglucanase, mannanase, xylanase activity or a combination of these activities, and polynucleotides encoding them. In one aspect, the glucanase activity is an endoglucanase activity (e.g., endo-1,4-beta-D-glucan 4-glucano hydrolase activity) and comprises hydrolysis of 1,4-beta-D-glycosidic linkages in cellulose, cellulose derivatives (e.g., carboxy methyl cellulose and hydroxy ethyl cellulose) lichenin, beta-1,4 bonds in mixed beta-1,3 glucans, such as cereal beta-D-glucans or xyloglucans and other plant material containing cellulosic parts. In addition, methods of designing new enzymes and methods of use thereof are also provided. In alternative aspects, the new glucanases e.g., endoglucanases, mannanases, xylanases have increased activity and stability, including thermotolerance or thermostability, at increased or decreased pHs and temperatures.Type: GrantFiled: March 28, 2014Date of Patent: June 25, 2019Assignee: BP Corporation North America Inc.Inventors: Brian Steer, Shaun Healey, Alireza Esteghlalian, Stacy Marie Miles, Kenneth Barrett, Rene Quadt
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Publication number: 20140295523Abstract: The invention relates to polypeptides having glucanase, e.g., endoglucanase, mannanase, xylanase activity or a combination of these activities, and polynucleotides encoding them. In one aspect, the glucanase activity is an endoglucanase activity (e.g., endo-1,4-beta-D-glucan 4-glucano hydrolase activity) and comprises hydrolysis of 1,4-beta-D-glycosidic linkages in cellulose, cellulose derivatives (e.g., carboxy methyl cellulose and hydroxy ethyl cellulose) lichenin, beta-1,4 bonds in mixed beta-1,3 glucans, such as cereal beta-D-glucans or xyloglucans and other plant material containing cellulosic parts. In addition, methods of designing new enzymes and methods of use thereof are also provided. In alternative aspects, the new glucanases e.g., endoglucanases, mannanases, xylanases have increased activity and stability, including thermotolerance or thermostability, at increased or decreased pHs and temperatures.Type: ApplicationFiled: March 28, 2014Publication date: October 2, 2014Applicant: BP Corporation North America Inc.Inventors: Brian Steer, Shaun Healey, Alireza Esteghlalian, Stacy Marie Miles, Kenneth Barrett, Rene Quadt
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Publication number: 20110117067Abstract: The invention relates to polypeptides having glucanase, e.g., endoglucanase, mannanase, xylanase activity or a combination of these activities, and polynucleotides encoding them. In one aspect, the glucanase activity is an endoglucanase activity (e.g., endo-1,4-beta-D-glucan 4-glucano hydrolase activity) and comprises hydrolysis of 1,4-beta-D-glycosidic linkages in cellulose, cellulose derivatives (e.g., carboxy methyl cellulose and hydroxy ethyl cellulose) lichenin, beta-1,4 bonds in mixed beta-1,3 glucans, such as cereal beta-D-glucans or xyloglucans and other plant material containing cellulosic parts. In addition, methods of designing new enzymes and methods of use thereof are also provided. In alternative aspects, the new glucanases e.g., endoglucanases, mannanases, xylanases have increased activity and stability, including thermotolerance or thermostability, at increased or decreased pHs and temperatures.Type: ApplicationFiled: August 4, 2007Publication date: May 19, 2011Inventors: Alireza Esteghlalian, Kenneth Barrett, Shaun Healey, Stacy M. Miles, Rene Quadt