Patents by Inventor Thomas W. Jeffries
Thomas W. Jeffries 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: 20220401349Abstract: The invention provides lipid bodies isolated from yeast, compositions comprising the lipid bodies, products made from the lipid bodies, methods of making the lipid bodies, and methods of using the lipid bodies. The lipid bodies of the invention have an exceptionally large size and high internal neutral lipid content, providing a number of advantages for a variety of practical applications.Type: ApplicationFiled: November 13, 2020Publication date: December 22, 2022Applicant: Xylome CorporationInventors: Thomas W. Jeffries, Thomas J. Kelleher, David Z. Mokry, Richard Taylor, Austin Gluth, Merrill S. Goldenberg
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Patent number: 11168340Abstract: Lipogenic yeasts bioengineered to overexpress genes for lipid production, and methods of use thereof. The yeasts are modified to express, constitutively express, or overexpress an acetyl-CoA carboxylase, an alpha-amylase, an ATP citrate lyase, a diacylglycerol acyltransferase, a fatty acid synthase, a glycerol kinase, a 6-phosphogluconate dehydrogenase, a glycerol-3-phosphate dehydrogenase, a malic enzyme, a fatty acyl-CoA reductase, a delta-9 acyl-CoA desaturase, a glycerol-3-phosphate acyltransferase, a lysophosphatidate acyltransferase, a glucose-6-phosphate dehydrogenase, a beta-glucosidase, a hexose transporter, a glycerol transporter, a glycoside hydrolase enzyme, an auxiliary activity family 9 enzyme, or combinations thereof. The yeasts in some cases are also modified to reduce or ablate activity of certain proteins. The methods include cultivating the yeast to convert low value soluble organic stillage byproducts into lipids suitable for biodiesel production and other higher value uses.Type: GrantFiled: April 21, 2020Date of Patent: November 9, 2021Assignee: Xylome CorporationInventors: Thomas W. Jeffries, David Z. Mokry, Christopher H. Calvey
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Publication number: 20200270651Abstract: Lipogenic yeasts bioengineered to overexpress genes for lipid production, and methods of use thereof. The yeasts are modified to express, constitutively express, or overexpress an acetyl-CoA carboxylase, an alpha-amylase, an ATP citrate lyase, a diacylglycerol acyltransferase, a fatty acid synthase, a glycerol kinase, a 6-phosphogluconate dehydrogenase, a glycerol-3-phosphate dehydrogenase, a malic enzyme, a fatty acyl-CoA reductase, a delta-9 acyl-CoA desaturase, a glycerol-3-phosphate acyltransferase, a lysophosphatidate acyltransferase, a glucose-6-phosphate dehydrogenase, a beta-glucosidase, a hexose transporter, a glycerol transporter, a glycoside hydrolase enzyme, an auxiliary activity family 9 enzyme, or combinations thereof. The yeasts in some cases are also modified to reduce or ablate activity of certain proteins. The methods include cultivating the yeast to convert low value soluble organic stillage byproducts into lipids suitable for biodiesel production and other higher value uses.Type: ApplicationFiled: April 21, 2020Publication date: August 27, 2020Applicant: Xylome CorporationInventors: Thomas W. Jeffries, David Z. Mokry, Christopher H. Calvey
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Patent number: 10662448Abstract: Lipogenic yeasts bioengineered to overexpress genes for lipid production, and methods of use thereof. The yeasts are modified to express, constitutively express, or overexpress an acetyl-CoA carboxylase, an alpha-amylase, an ATP citrate lyase, a diacylglycerol acyltransferase, a fatty acid synthase, a glycerol kinase, a 6-phosphogluconate dehydrogenase, a glycerol-3-phosphate dehydrogenase, a malic enzyme, a fatty acyl-CoA reductase, a delta-9 acyl-CoA desaturase, a glycerol-3-phosphate acyltransferase, a lysophosphatidate acyltransferase, a glucose-6-phosphate dehydrogenase, a beta-glucosidase, a hexose transporter, a glycerol transporter, a glycoside hydrolase enzyme, an auxiliary activity family 9 enzyme, or combinations thereof. The yeasts in some cases are also modified to reduce or ablate activity of certain proteins. The methods include cultivating the yeast to convert low value soluble organic stillage byproducts into lipids suitable for biodiesel production and other higher value uses.Type: GrantFiled: August 17, 2017Date of Patent: May 26, 2020Assignee: XYLOME CORPORATIONInventors: Thomas W. Jeffries, David Z. Mokry, Christopher H. Calvey
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Publication number: 20180245109Abstract: Lipogenic yeasts bioengineered to overexpress genes for lipid production, and methods of use thereof. The yeasts are modified to express, constitutively express, or overexpress an acetyl-CoA carboxylase, an alpha-amylase, an ATP citrate lyase, a diacylglycerol acyltransferase, a fatty acid synthase, a glycerol kinase, a 6-phosphogluconate dehydrogenase, a glycerol-3-phosphate dehydrogenase, a malic enzyme, a fatty acyl-CoA reductase, a delta-9 acyl-CoA desaturase, a glycerol-3-phosphate acyltransferase, a lysophosphatidate acyltransferase, a glucose-6-phosphate dehydrogenase, a beta-glucosidase, a hexose transporter, a glycerol transporter, a glycoside hydrolase enzyme, an auxiliary activity family 9 enzyme, or combinations thereof. The yeasts in some cases are also modified to reduce or ablate activity of certain proteins. The methods include cultivating the yeast to convert low value soluble organic stillage byproducts into lipids suitable for biodiesel production and other higher value uses.Type: ApplicationFiled: August 17, 2017Publication date: August 30, 2018Applicant: Xylome CorporationInventors: Thomas W. Jeffries, David Z. Mokry, Christopher H. Calvey
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Publication number: 20140206071Abstract: The present invention provides yeast cells that produce high concentrations of ethanol, culture media and bioreactors comprising the yeast cells, and methods for making and using the yeast cells in efficiently producing ethanol.Type: ApplicationFiled: December 23, 2013Publication date: July 24, 2014Inventors: Thomas W Jeffries, Shawn S. Nelson, Sarah D. Mahan
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Patent number: 8530211Abstract: Provided herein are methods of using yeast cells to produce ethanol by contacting a mixture comprising xylose with a Spathaspora yeast cell under conditions suitable to allow the yeast to ferment at least a portion of the xylose to ethanol. The methods allow for efficient ethanol production from hydrolysates derived from lignocellulosic material and sugar mixtures including at least xylose and glucose or xylose, glucose and cellobiose.Type: GrantFiled: April 19, 2012Date of Patent: September 10, 2013Assignees: Wisconsin Alumni Research Foundation, U.S. Department of AgricultureInventors: Thomas W. Jeffries, Laura B. Willis, Tanya M. Long, Yi-Kai Su
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Publication number: 20120270289Abstract: Provided herein are methods of using yeast cells to produce ethanol by contacting a mixture comprising xylose with a Spathaspora yeast cell under conditions suitable to allow the yeast to ferment at least a portion of the xylose to ethanol. The methods allow for efficient ethanol production from hydrolysates derived from lignocellulosic material and sugar mixtures including at least xylose and glucose or xylose, glucose and cellobiose.Type: ApplicationFiled: April 19, 2012Publication date: October 25, 2012Applicants: U.S. DEPARTMENT OF AGRICULTURE, WISCONSIN ALUMNI RESEARCH FOUNDATIONInventors: Thomas W. Jeffries, Laura B. Willis, Tanya M. Long, Yi-Kai Su
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Publication number: 20110262983Abstract: The present invention provides yeast cells that produce high concentrations of ethanol, culture media and bioreactors comprising the yeast cells, and methods for making and using the yeast cells in efficiently producing ethanol.Type: ApplicationFiled: March 31, 2011Publication date: October 27, 2011Applicant: The United States of America as represented by the Secretary of AgricultureInventors: Thomas W. Jeffries, Shawn S. Nelson, Sarah D. Mahan
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Patent number: 7501275Abstract: Disclosed are methods for obtaining expression of polypeptides in organisms employing alternative codon systems, and polynucleotides for use therein.Type: GrantFiled: October 27, 2004Date of Patent: March 10, 2009Assignee: The United States of America as represented by the Secretary of AgricultureInventors: Jose M. Laplaza, Thomas W. Jeffries
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Patent number: 7285403Abstract: Disclosed are xylose-fermenting recombinant yeast strains expressing xylose reductase, xylitol dehydrogenase, and xylulokinase and having reduced expression of PHO13 or a PHO13 ortholog, as well as methods of fermenting xylose to obtain ethanol using the recombinant yeast strains.Type: GrantFiled: April 6, 2006Date of Patent: October 23, 2007Assignees: Wisconsin Alumni Research Foundation, United States as Represented by the Secretary of AgricultureInventors: Thomas W. Jeffries, Haiying Ni, Jose Miguel Laplaza
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Patent number: 7226735Abstract: Disclosed are xylose-fermenting recombinant yeast strains comprising heterologous PsXYL1, Ps XYL2, and PsXYL3, as well as methods of fermenting xylose to obtain ethanol using the recombinant yeast strain.Type: GrantFiled: January 21, 2003Date of Patent: June 5, 2007Assignees: Wisconsin Alumni Research Foundation, The United States of America as represented by the Secretary of AgricultureInventors: Thomas W. Jeffries, Yong-Su Jin
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Publication number: 20040142456Abstract: Disclosed are xylose-fermenting recombinant yeast strains comprising heterologous PsXYL1, Ps XYL2, and PsXYL3, as well as methods of fermenting xylose to obtain ethanol using the recombinant yeast strain.Type: ApplicationFiled: January 21, 2003Publication date: July 22, 2004Applicants: Wisconsin Alumni Research Foundation, United States of America, as Represented by the Secretary of AgricultureInventors: Thomas W. Jeffries, Yong-Su Jin
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Patent number: 6391599Abstract: Disclosed is a SHAM-sensitive terminal oxidase (STO) gene from the xylose-fermenting yeast Pichia stipitis. Also disclosed is a mutant of Pichia stipitis in which the STO gene natively present in the wild-type yeast was disrupted. Mutants of Pichia stipitis having reduced expression of PsSTO were found to exhibit enhanced fermentation of xylose to ethanol.Type: GrantFiled: April 21, 2000Date of Patent: May 21, 2002Assignee: Wisconsin Alumni Research FoundationInventors: Nian-Qing Shi, Thomas W. Jeffries
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Patent number: 6071729Abstract: Disclosed is a xylose-fermenting mutant yeast strain exhibiting reduced expression of cytochrome c and enhanced fermentation of xylose relative to xylose-fermenting yeast strains in which cytochrome c is fully functional. Also disclosed is a method of producing ethanol from xylose by culturing a xylose-fermenting mutant yeast strain exhibiting reduced expression of cytochrome c in the presence of xylose-containing material.Type: GrantFiled: March 23, 1999Date of Patent: June 6, 2000Inventors: Thomas W. Jeffries, Nian-Qing Shi
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Patent number: 5834301Abstract: A method of removing color from wood pulp is disclosed. The method comprises the steps of preparing a wood pulp, treating the wood pulp with the xylanase wherein the xylanase is capable of releasing chromophores from the pulp and extracting the wood pulp to remove chromophores. Also disclosed are substantially purified preparations of xylanase enzymes from bacterial isolates.Type: GrantFiled: December 18, 1995Date of Patent: November 10, 1998Assignee: The United States of America as represented by the Secretary of AgricultureInventors: Thomas W. Jeffries, Anthony C. Grabski, Rajesh N. Patel, Graziano Elegir, George Szakacs
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Patent number: 5498534Abstract: A method of removing color from wood pulp is disclosed. The method comprises the steps of preparing a wood pulp, treating the wood pulp with the xylanase wherein the xylanase is capable of releasing chromophores from the pulp and extracting the wood pulp to remove chromophores. Also disclosed are substantially purified preparations of xylanase enzymes from bacterial isolates. The xylanase is preferrably isolated xyl 3 obtained from Streptomyces roseiscleroticus NRRL B-11019, wherein xyl 3 has a molecular weight of approximately 21 kD as determined by SDS-gel electrophoresis and a pH optima of pH 5.0-7.0.Type: GrantFiled: May 30, 1995Date of Patent: March 12, 1996Assignee: The United States of America as represented by the Secretary of AgricultureInventors: Thomas W. Jeffries, Anthony C. Grabski, Rajesh N. Patel, Graziano Elegir, George Szakacs
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Patent number: 5369024Abstract: A method of removing color from wood pulp is disclosed. The method comprises the steps of preparing a wood pulp, treating the wood pulp with the xylanase wherein the xylanase is capable of releasing chromophores from the pulp and extracting the wood pulp to remove chromophores. In a preferred form of the invention, the wood pulp is a kraft pulp and the xylanase is selected from the group consisting of xyl 1, xyl 2, xyl 3 and xyl 4. These xylanases are obtained from Streptomyces roseiscleroticus NRRL-11019.Type: GrantFiled: March 25, 1992Date of Patent: November 29, 1994Assignee: The United States of America as represented by the Secretary of AgricultureInventors: Thomas W. Jeffries, Anthony C. Grabski, Rajesh N. Patel
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Patent number: 5126266Abstract: A growth medium is provided for mutant mixtures of Pichia stipitis or Candida shehatae that permits the growth of mutants which are the best xylose-to-ethanol fermenters in the mixture while inhibiting the growth of inefficient fermenters. The medium comprises a mixture of two compounds, the first compound selected from the group consisting of L-xylose, L-arabinose, D-arabinose, glycerol, erythritol, erythrose, 5- and 6-carbon polyols such as xylitol, L-arabinitol, D-arabinitol and mannitol, and wherein the second compound is ammonium tartarate or an inorganic nitrogen source compound such as ammonium chloride or ammonium sulfate.Type: GrantFiled: May 2, 1988Date of Patent: June 30, 1992Assignee: The United States of America as represented by the Secretary of AgricultureInventors: Thomas W. Jeffries, Philip L. Livingston
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Patent number: 4663284Abstract: Ethanol is produced from D-xylose by fermentation with any of the known xylose-metabolizing yeasts, such as Pachysolen tannophilus. To improve the yield of ethanol, small quantities of glucose are added to the fermentation medium during the fermentation process.Type: GrantFiled: September 14, 1984Date of Patent: May 5, 1987Assignee: The United States of America as represented by the Secretary of AgricultureInventor: Thomas W. Jeffries