Patents by Inventor Lisa A. Laffend
Lisa A. Laffend 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: 20210071134Abstract: A fermentation broth which includes a microbial cell which has been subjected to a condition under which the activity an endogenous transporter for 2? fucosyllactose is increased. Also provided are methods for increasing export of 2? fucosyllactose from a microbial cell, methods for identifying an endogenous yeast transporter of 2? fucosyllactose, and microbial cells genetically engineered to increase the activity of an endogenous transporter of 2? fucosyllactose.Type: ApplicationFiled: April 23, 2018Publication date: March 11, 2021Inventors: Lisa A. LAFFEND, Mark J. NELSON, Lori Ann MAGGIO-HALL
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Publication number: 20190323053Abstract: A fermentation broth which includes a microbial cell which has been subjected to a condition under which the activity an endogenous transporter for 2? fucosyllactose is increased. Also provided are methods for increasing export of 2? fucosyllactose from a microbial cell, methods for identifying an endogenous yeast transporter of 2? fucosyllactose, and microbial cells genetically engineered to increase the activity of an endogenous transporter of 2? fucosyllactose.Type: ApplicationFiled: April 23, 2018Publication date: October 24, 2019Inventors: Lisa A LAFFEND, Mark J. Nelson, Lori Ann Maggio-Hall
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Publication number: 20090253192Abstract: The present invention provides an improved method for the biological production of 1,3-propanediol from a fermentable carbon source in a single microorganism. In one aspect of the present invention, an improved process for the conversion of glucose to 1,3-propanediol is achieved by the use of an E. coli transformed with the Klebsiella pneumoniae dha regulon genes dhaR, orfY, dhaT, orfX, orfW, dhaB1, dhaB2, dhaB3, and orfZ, all these genes arranged in the same genetic organization as found in wild type Klebsiella pneumoniae. In another aspect of the present invention, an improved process for the production of 1,3-propanediol from glucose using a recombinant E. coli containing genes encoding a G3PDH, a G3P phosphatase, a dehydratase, and a dehydratase reactivation factor compared to an identical process using a recombinant E. coli containing genes encoding a G3PDH, a G3P phosphatase, a dehydratase, a dehydratase reactivation factor and a 1,3-propanediol oxidoreductase (dhaT).Type: ApplicationFiled: February 16, 2009Publication date: October 8, 2009Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Mark Emptage, Sharon L. Haynie, Lisa A. Laffend
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Patent number: 7504250Abstract: The present invention provides an improved method for the biological production of 1,3-propanediol from a fermentable carbon source in a single microorganism. In one aspect of the present invention, an improved process for the conversion of glucose to 1,3-propanediol is achieved by the use of an E. coli transformed with the Klebsiella pneumoniae dha regulon genes dhaR, orfY, dhaT, orfX, orfW, dhaB1, dhaB2, dhaB3, and orfZ, all these genes arranged in the same genetic organization as found in wild type Klebsiella pneumoniae. In another aspect of the present invention, an improved process for the production of 1,3-propanediol from glucose using a recombinant E. coli containing genes encoding a G3PDH, a G3P phosphatase, a dehydratase, and a dehydratase reactivation factor compared to an identical process using a recombinant E. coli containing genes encoding a G3PDH, a G3P phosphatase, a dehydratase, a dehydratase reactivation factor and a 1,3-propanediol oxidoreductase (dhaT).Type: GrantFiled: January 16, 2006Date of Patent: March 17, 2009Assignee: E. I. du Pont de Nemours and CompanyInventors: Mark Emptage, Sharon L. Haynie, Lisa A. Laffend, Jeff P. Pucci, Gregory Whited
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Patent number: 7452710Abstract: The present invention provides an improved method for the biological production of 1,3-propanediol from a fermentable carbon source in a single microorganism. In one aspect of the present invention, an improved process for the conversion of glucose to 1,3-propanediol is achieved by the use of an E. coli transformed with the Klebsiella pneumoniae dha regulon genes dhaR, orfY, dhaT, orfX, orfW, dhaB1, dhaB2, dhaB3, and orfZ, all these genes arranged in the same genetic organization as found in wild type Klebsiella pneumoniae. In another aspect of the present invention, an improved process for the production of 1,3-propanediol from glucose using a recombinant E. coli containing genes encoding a G3PDH, a G3P phosphatase, a dehydratase, and a dehydratase reactivation factor compared to an identical process using a recombinant E. coli containing genes encoding a G3PDH, a G3P phosphatase, a dehydratase, a dehydratase reactivation factor and a 1,3-propanediol oxidoreductase (dhaT).Type: GrantFiled: February 13, 2006Date of Patent: November 18, 2008Assignee: E.I. du Pont de Nemours and CompanyInventors: Mark Emptage, Sharon L. Haynie, Lisa A. Laffend, Jeff P. Pucci, Gregory Whited
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Publication number: 20070048849Abstract: A process is provided for the bioconversion of a carbon substrate to 1,3-propanediol by a single organism utilizing microorganisms containing the genes encoding for an active glycerol or diol dehydratase enzyme by contacting these organisms with a carbon substrate under the appropriate fermentation conditions.Type: ApplicationFiled: October 30, 2006Publication date: March 1, 2007Inventors: Lisa Laffend, Vasantha Nagarajan, Charles Nakamura
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Publication number: 20060148053Abstract: The present invention provides an improved method for the biological production of 1,3-propanediol from a fermentable carbon source in a single microorganism. In one aspect of the present invention, an improved process for the conversion of glucose to 1,3-propanediol is achieved by the use of an E. coli transformed with the Klebsiella pneumoniae dha regulon genes dhaR, orfY, dhaT, orfX, orfW, dhaB1, dhaB2, dhaB3, and orfZ, all these genes arranged in the same genetic organization as found in wild type Klebsiella pneumoniae. In another aspect of the present invention, an improved process for the production of 1,3-propanediol from glucose using a recombinant E. coli containing genes encoding a G3PDH, a G3P phosphatase, a dehydratase, and a dehydratase reactivation factor compared to an identical process using a recombinant E. coli containing genes encoding a G3PDH, a G3P phosphatase, a dehydratase, a dehydratase reactivation factor and a 1,3-propanediol oxidoreductase (dhaT).Type: ApplicationFiled: January 16, 2006Publication date: July 6, 2006Inventors: Mark Emptage, Sharon Haynie, Lisa Laffend, Jeff Pucci, Gregory Whited
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Patent number: 7067300Abstract: The present invention provides an improved method for the biological production of 1,3-propanediol from a fermentable carbon source in a single microorganism. In one aspect of the present invention, an improved process for the conversion of glucose to 1,3-propanediol is achieved by the use of an E. coli transformed with the Klebsiella pneumoniae dha regulon genes dhaR, orfY, dhaT, orfX, orfW, dhaB1, dhaB2, dhaB3, and orfZ, all these genes arranged in the same genetic organization as found in wild type Klebsiella pneumoniae. In another aspect of the present invention, an improved process for the production of 1,3-propanediol from glucose using a recombinant E. coli containing genes encoding a G3PDH, a G3P phosphatase, a dehydratase, and a dehydratase reactivation factor compared to an identical process using a recombinant E. coli containing genes encoding a G3PDH, a G3P phosphatase, a dehydratase, a dehydratase reactivation factor and a 1,3-propanediol oxidoreductase (dhaT).Type: GrantFiled: October 21, 2002Date of Patent: June 27, 2006Assignee: E. I. du Pont de Nemours and CompanyInventors: Mark Emptage, Sharon L. Haynie, Lisa A. Laffend, Jeff P. Pucci, Gregory Marshall Whited
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Publication number: 20060121588Abstract: The present invention provides an improved method for the biological production of 1,3-propanediol from a fermentable carbon source in a single microorganism. In one aspect of the present invention, an improved process for the conversion of glucose to 1,3-propanediol is achieved by the use of an E. coli transformed with the Klebsiella pneumoniae dha regulon genes dhaR, orfY, dhaT, orfX, orfW, dhaB1, dhaB2, dhaB3, and orfZ, all these genes arranged in the same genetic organization as found in wild type Klebsiella pneumoniae. In another aspect of the present invention, an improved process for the production of 1,3-propanediol from glucose using a recombinant E. coli containing genes encoding a G3PDH, a G3P phosphatase, a dehydratase, and a dehydratase reactivation factor compared to an identical process using a recombinant E. coli containing genes encoding a G3PDH, a G3P phosphatase, a dehydratase, a dehydratase reactivation factor and a 1,3-propanediol oxidoreductase (dhaT).Type: ApplicationFiled: February 13, 2006Publication date: June 8, 2006Inventors: Mark Emptage, Sharon Haynie, Lisa Laffend, Jeff Pucci, Gregory Whited
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Publication number: 20030157674Abstract: The present invention provides an improved method for the biological production of 1,3-propanediol from a fermentable carbon source in a single microorganism. In one aspect of the present invention, an improved process for the conversion of glucose to 1,3-propanediol is achieved by the use of an E. coli transformed with the Klebsiella pneumoniae dha regulon genes dhaR, orfY, dhaT, orfX, orfW, dhaB1, dhaB2, dhaB3, and orfZ, all these genes arranged in the same genetic organization as found in wild type Klebsiella pneumoniae. In another aspect of the present invention, an improved process for the production of 1,3-propanediol from glucose using a recombinant E. coli containing genes encoding a G3PDH, a G3P phosphatase, a dehydratase, and a dehydratase reactivation factor compared to an identical process using a recombinant E. coli containing genes encoding a G3PDH, a G3P phosphatase, a dehydratase, a dehydratase reactivation factor and a 1,3-propanediol oxidoreductase (dhaT).Type: ApplicationFiled: October 21, 2002Publication date: August 21, 2003Inventors: Mark Emptage, Sharon L. Haynie, Lisa A. Laffend, Jeff P. Pucci, Gregory Marshall Whited
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Patent number: 6514733Abstract: The present invention provides an improved method for the biological production of 1,3-propanediol from a fermentable carbon source in a single microorganism. In one aspect of the present invention, an improved process for the conversion of glucose to 1,3-propanediol is achieved by the use of an E. coli transformed with the Klebsiella pneumoniae dha regulon genes dhaR, orfY, dhaT, orfX, orfW, dhaB1, dhaB2, dhaB3, and orfZ, all these genes arranged in the same genetic organization as found in wild type Klebsiella pneumoniae. In another aspect of the present invention, an improved process for the production of 1,3-propanediol from glucose using a recombinant E. coli containing genes encoding a G3PDH, a G3P phosphatase, a dehydratase, and a dehydratase reactivation factor compared to an identical process using a recombinant E. coli containing genes encoding a G3PDH, a G3P phosphatase, a dehydratase, a dehydratase reactivation factor and a 1,3-propanediol oxidoreductase (dhaT).Type: GrantFiled: August 18, 2000Date of Patent: February 4, 2003Assignee: E. I. du Pont de Nemours and CompanyInventors: Mark Emptage, Sharon L. Haynie, Lisa A. Laffend, Jeff P. Pucci, Gregory Whited