Patents by Inventor Jeffrey J. Kolstad

Jeffrey J. Kolstad 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).

  • Patent number: 9714438
    Abstract: Sugar mixtures containing nonfermentable oligomers are fermented in the presence of certain enzymes that depolymerise the oligomers simultaneously with the fermentation process.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: July 25, 2017
    Assignee: Cargill, Incorporated
    Inventors: Daniel R. Beacom, Jeffrey J. Kolstad, David H. Reeder, Brian J. Rush
  • Publication number: 20160138060
    Abstract: Sugar mixtures containing nonfermentable oligomers are fermented in the presence of certain enzymes that depolymerise the oligomers simultaneously with the fermentation process.
    Type: Application
    Filed: January 25, 2016
    Publication date: May 19, 2016
    Inventors: Daniel R. Beacom, Jeffrey J. Kolstad, David H. Reeder, Brian J. Rush
  • Patent number: 9328364
    Abstract: Sugar mixtures containing nonfermentable oligomers are fermented in the presence of certain enzymes that depolymerize the oligomers simultaneously with the fermentation process.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: May 3, 2016
    Assignee: Cargill Incorporated
    Inventors: Daniel R. Beacom, Jeffrey J. Kolstad, David H. Reeder, Brian J. Rush
  • Publication number: 20150132814
    Abstract: Sugar mixtures containing nonfermentable oligomers are fermented in the presence of certain enzymes that depolymerise the oligomers simultaneously with the fermentation process.
    Type: Application
    Filed: October 27, 2014
    Publication date: May 14, 2015
    Applicant: Cargill, Incorporated
    Inventors: Daniel R. Beacom, Jeffrey J. Kolstad, David H. Reeder, Brian J. Rush
  • Patent number: 7700332
    Abstract: The invention provides methods and materials related to the production of lactic acid. Specifically, the invention provides methods for producing lactic acid using a crabtree-negative yeast, such as of the Kluyveromyces, Pichia, Candida, Trichosporon and Yamadazmya genera, which have been transformed with a lactate dehydrogenase gene.
    Type: Grant
    Filed: April 20, 2007
    Date of Patent: April 20, 2010
    Assignee: Cargill Inc.
    Inventors: Vineet Rajgarhia, Vassily Hatzimanikatis, Stacey Olson, Ting Carlson, John N. Starr, Jeffrey J. Kolstad, Aharon Eyal
  • Publication number: 20090011481
    Abstract: Sugar mixtures containing nonfermentable oligomers are fermented in the presence of certain enzymes that depolymerise the oligomers simultaneously with the fermentation process.
    Type: Application
    Filed: March 16, 2005
    Publication date: January 8, 2009
    Applicant: NATUREWORKS LLC
    Inventors: Daniel R. Beacom, Jeffrey J. Kolstad, David H. Reeder, Brian J. Rush
  • Patent number: 7229805
    Abstract: The invention provides methods and materials related to the production of lactic acid. Specifically, the invention provides methods for producing lactic acid using a crabtree-negative yeast, such as of the Kluyveromyces, Pichia, Candida, Trichosporon and Yamadazmya genera, which have been transformed with a lactate dehydrogenase gene.
    Type: Grant
    Filed: November 4, 2002
    Date of Patent: June 12, 2007
    Assignee: Nature Work, LLP
    Inventors: Vineet Rajgarhia, Vassily Hatzimanikatis, Stacey Olson, Ting Carlson, John N. Starr, Jeffrey J. Kolstad, Aharon Eyal
  • Patent number: 7144977
    Abstract: The techniques for processing lactic acid/lactate salt mixtures are provided. Preferred mixtures for processing are obtained from fermentation broths, preferably from fermentation processes conducted at a pH of 4.8 or lower. The techniques generally concern the provision of separated lactic acid and lactate streams, from the mixtures. Preferred techniques of separation and processing of each of the streams are provided.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: December 5, 2006
    Assignee: Cargill, Incorporated
    Inventors: Aharon M. Eyal, John N. Starr, Rod Fisher, Betty Hazan, Riki Canari, David R. Witzke, Patrick R. Gruber, Jeffrey J. Kolstad, Xiangsheng Meng
  • Patent number: 7019170
    Abstract: The invention provides a process for the recovery of lactic acid and products thereof from an aqueous solution containing free lactic acid and at least one lactate salt at a total concentration of at least 5%, the process comprising the steps of: extracting at least 70% of the free lactic acid from the aqueous solution by contacting the solution with a basic extractant, to form a lactic acid-containing extract and a lactic acid-depleted, lactate salt-containing aqueous solution; separating the lactic acid-containing extract from the depleted aqueous solution; and stripping the extracted lactic acid from the extract by methods known per se, to form a solution of lactic acid and a stripped extractant.
    Type: Grant
    Filed: October 2, 1997
    Date of Patent: March 28, 2006
    Assignee: Cargill Incorporated
    Inventors: Aharon Meir Eyal, Patrick R. Gruber, Rod R. Fisher, Jeffrey J. Kolstad
  • Publication number: 20040210088
    Abstract: The techniques for processing lactic acid/lactate salt mixtures are provided. Preferred mixtures for processing are obtained from fermentation broths, preferably from fermentation processes conducted at a pH of 4.8 or lower. The techniques generally concern the provision of separated lactic acid and lactate streams, from the mixtures. Preferred techniques of separation and processing of each of the streams are provided.
    Type: Application
    Filed: February 26, 2004
    Publication date: October 21, 2004
    Applicant: Cargill, Incorporated
    Inventors: Aharon M. Eyal, John N. Starr, Rod Fisher, Betty Hazan, Riki Canari, David R. Witzke, Patrick R. Gruber, Jeffrey J. Kolstad
  • Publication number: 20040029238
    Abstract: The invention provides methods and materials related to the production of organic products. Specifically, the invention provides various recombinant yeast cells, methods for culturing yeast cells, methods for making yeast cells, nucleic acid constructs, and methods and materials for producing various organic products.
    Type: Application
    Filed: November 4, 2002
    Publication date: February 12, 2004
    Inventors: Vineet Rajgarhia, Vassily Hatzimanikatis, Stacey Olson, Ting Carlson, John N. Starr, Jeffrey J. Kolstad, Aharon Eyal
  • Publication number: 20030187300
    Abstract: The invention provides a process for the recovery of lactic acid and products thereof from an aqueous solution containing free lactic acid and at least one lactate salt at a total concentration of at least 5%, the process comprising the steps of: extracting at least 70% of the free lactic acid from the aqueous solution by contacting the solution with a basic extractant, to form a lactic acid-containing extract and a lactic acid-depleted, lactate salt-containing aqueous solution; separating the lactic acid-containing extract from the depleted aqueous solution; and stripping the extracted lactic acid from the extract by methods known per se, to form a solution of lactic acid and a stripped extractant.
    Type: Application
    Filed: October 25, 1999
    Publication date: October 2, 2003
    Inventors: AHARON MEIR EYAL, PATRICK R. GRUBER, ROD R. FISHER, JEFFREY J. KOLSTAD
  • Publication number: 20030176736
    Abstract: The techniques for processing lactic acid/lactate salt mixtures are provided. Preferred mixtures for processing are obtained from fermentation broths, preferably from fermentation processes conducted at a pH of 4.8 or lower. The techniques generally concern the provision of separated lactic acid and lactate streams, from the mixtures. Preferred techniques of separation and processing of each of the streams are provided.
    Type: Application
    Filed: March 18, 2003
    Publication date: September 18, 2003
    Applicant: Cargill, Incorporated
    Inventors: Aharon M. Eyal, John N. Starr, Rod Fisher, Betty Hazan, Riki Canari, David R. Witzke, Patrick R. Gruber, Jeffrey J. Kolstad
  • Patent number: 6534679
    Abstract: The techniques for processing lactic acid/lactate salt mixtures are provided. Preferred mixtures for processing are obtained from fermentation broths, preferably from fermentation processes conducted at a pH of 4.8 or lower. The techniques generally concern the provision of separated lactic acid and lactate streams, from the mixtures. Preferred techniques of separation and processing of each of the streams are provided.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: March 18, 2003
    Assignee: Cargill, Incorporated
    Inventors: Aharon M. Eyal, John N. Starr, Rod Fisher, Betty Hazan, Riki Canari, David R. Witzke, Patrick R. Gruber, Jeffrey J. Kolstad
  • Patent number: 6485947
    Abstract: Crabtree negative organisms such as Kluyveromyces, Pichia, Hansenula and Candida, are used to make selected organic products such as lactic acid. The organisms are cultured in a first culture medium that includes glucose, under conditions that promote cellular respiration. The organisms are then cultured under a second set of conditions that promote production of the selected organic product. The organisms preferably contain an exogenous lactate dehydrogenase gene.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: November 26, 2002
    Assignee: Cargill Dow Polymers, LLC
    Inventors: Vineet Rajgarhia, Vassily Hatzimanikatis, Stacey Olson, Ting Carlson, John N. Starr, Jeffrey J. Kolstad, Aharon Eyal
  • Patent number: 6472559
    Abstract: A process for the production and isolation of lactic acid is provided. A lactate feed solution, preferably obtained from a fermentation broth is combined with and extracted by a water-immiscible base in the presence of an acidifying agent. Lactic acid is recovered from the resulting organic phase. Recovered carbonate or bicarbonate from the aqueous phase can be recycled to the fermentor and regenerated extractant can be recycled for use in the extraction.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: October 29, 2002
    Assignee: Cargill, Incorporated
    Inventors: Avraham M. Baniel, Aharon M. Eyal, Joseph Mizrahi, Betty Hazan, Rod R. Fisher, Jeffrey J. Kolstad, Brenda F. Stewart
  • Publication number: 20020128500
    Abstract: A method of preparing purified ester compositions is provided. The process can be utilized to isolate and purify monoglycerides and propylene glycol monoesters, to advantage. It can also be used to isolate preferred diester products. The invention also concerns equipment for conduct of the processes, provision of preferred food additives, and provision of preferred food industry compositions. The process generally involves use of liquid-liquid extractions, to advantage.
    Type: Application
    Filed: November 9, 2001
    Publication date: September 12, 2002
    Applicant: Cargill Incorporated
    Inventors: Jeffrey J. Kolstad, Richard D. Benson, Scott D. Bloomer, Paraskevas Tsobanakis
  • Patent number: 6355772
    Abstract: A nonwoven fabric comprised of a lactide polymer. The lactide polymer comprises a plurality of poly(lactide) polymer chains, residual lactide in concentration of less than about 2 percent and water in concentration of less than about 2000 parts-per-million. A process for manufacturing a nonwoven fabric with the lactide polymer composition is also disclosed.
    Type: Grant
    Filed: May 9, 2000
    Date of Patent: March 12, 2002
    Assignee: Cargill, Incorporated
    Inventors: Patrick R. Gruber, Jeffrey J. Kolstad, Christopher M. Ryan, Robin S. Eichen Conn, Eric S. Hall
  • Patent number: 6353086
    Abstract: The invention relates to a lactic acid residue containing polymer composition and product having improved stability and to methods for the preparation and use thereof. The lactic acid residue containing polymer preferably includes a polylactide polymer having a number average molecular weight of between about 25,000 and about 200,000, lactide, if present at all, present in a concentration of less than 0.5 wt % based on the weight of the composition, and deactivating agents. Articles which can be manufactured from the lactic acid residue containing polymer composition include fibers, coated paper, films, moldings, and foam.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: March 5, 2002
    Assignee: Cargill, Incorporated
    Inventors: Jeffrey J. Kolstad, David R. Witzke, Mark H. Hartmann, Eric Stanley Hall, James Nangeroni
  • Publication number: 20020004611
    Abstract: The techniques for processing lactic acid/lactate salt mixtures are provided. Preferred mixtures for processing are obtained from fermentation broths, preferably from fermentation processes conducted at a pH of 4.8 or lower. The techniques generally concern the provision of separated lactic acid and lactate streams, from the mixtures. Preferred techniques of separation and processing of each of the streams are provided.
    Type: Application
    Filed: August 10, 2001
    Publication date: January 10, 2002
    Applicant: Cargill, Incorporated
    Inventors: Aharon M. Eyal, John N. Starr, Rod Fisher, Betty Hazan, Riki Canari, David R. Witzke, Patrick R. Gruber, Jeffrey J. Kolstad