Patents by Inventor Dorothy Dennis

Dorothy Dennis 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).

  • Publication number: 20230416792
    Abstract: Provided herein are methods of recovering oil from microorganisms. The methods are useful, for example, in obtaining nutritional oils and/or lipid biofuels. The methods of recovering oil described herein include contacting a population of microorganisms with one or more enzymes under conditions that cause disruption of the microorganisms, concentrating the disrupted microorganisms, and extracting lipids from the disrupted microorganisms at high temperature in the presence of a salt and in the absence of solvent.
    Type: Application
    Filed: July 12, 2023
    Publication date: December 28, 2023
    Inventors: Dorothy A. Dennis, Roberto E. Armenta
  • Patent number: 11746363
    Abstract: Provided herein are methods of recovering oil from microorganisms. The methods are useful, for example, in obtaining nutritional oils and/or lipid biofuels. The methods of recovering oil described herein include contacting a population of microorganisms with one or more enzymes under conditions that cause disruption of the microorganisms, concentrating the disrupted microorganisms, and extracting lipids from the disrupted microorganisms at high temperature in the presence of a salt and in the absence of solvent.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: September 5, 2023
    Assignee: MARA Renewables Corporation
    Inventors: Dorothy A. Dennis, Roberto E. Armenta
  • Publication number: 20210388312
    Abstract: Provided herein are methods of making microorganisms modified for increased xylose consumption as compared to unmodified microorganisms. The methods include providing xylose-consuming microorganisms comprising two or more copies of a nucleic acid sequence encoding xylose isomerase and two or more copies of a nucleic acid sequence encoding a xylose kinase, culturing the microorganisms in medium containing xylose and harvesting a portion of the microorganisms. These steps are repeated multiple times. The microorganisms are then isolated. The isolated microorganisms have increased xylose consumption rates compared to control xylose-consuming microorganisms. Also provided are a population of microorganisms made by the provided methods. Methods of culturing the population of microorganisms and methods of reducing xylitol production in cultures comprising the population of microorganisms are provided.
    Type: Application
    Filed: October 21, 2019
    Publication date: December 16, 2021
    Applicant: MARA RENEWABLES CORPORATION
    Inventors: Kimberly Hyson, Nathalia Florez, Denise Muise, Alexandra Merkx-Jacques, Dorothy Dennis, David Woodhall, Zachary Sun, Roberto E. Armenta
  • Patent number: 11001782
    Abstract: Provided herein are methods of recovering oil from microorganisms. The methods are useful, for example, in obtaining nutritional oils and/or lipid biofuels. The methods of recovering oil described herein include contacting a population of microorganisms with one or more enzymes under conditions that cause disruption of the microorganisms and extracting lipids from the population of microorganisms in the presence of reduced amounts of organic solvent or in the absence of organic solvent.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: May 11, 2021
    Assignee: DSM Nutritional Products AG
    Inventors: Dorothy A. Dennis, Roberto E. Armenta
  • Patent number: 10907115
    Abstract: Provided herein are methods for winterizing oil. The methods include heating the oil to a first temperature and maintaining the oil at the first temperature for a first period of time; reducing the first temperature of the oil after the first period of time to a second temperature over a second period of time, wherein reducing the first temperature produces a first solid fraction and first liquid fraction of the oil; removing the first solid fraction from the oil; reducing the second temperature of the first liquid fraction of the oil over a third period of time to a third temperature, wherein reducing the second temperature of the oil produces a second solid fraction and second liquid fraction of the oil; removing the second solid fraction from the oil; and recovering the second liquid fraction of the oil.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: February 2, 2021
    Assignee: MARA RENEWABLES CORPORATION
    Inventors: Xuan Jiang, Dorothy Dennis, Roberto E. Armenta
  • Publication number: 20210024852
    Abstract: Provided herein are methods of recovering oil from microorganisms. The methods are useful, for example, in obtaining nutritional oils and/or lipid biofuels. The methods of recovering oil described herein include contacting a population of microorganisms with one or more enzymes under conditions that cause disruption of the microorganisms, concentrating the disrupted microorganisms, and extracting lipids from the disrupted microorganisms at high temperature in the presence of a salt and in the absence of solvent.
    Type: Application
    Filed: August 10, 2020
    Publication date: January 28, 2021
    Inventors: Dorothy A. Dennis, Roberto E. Armenta
  • Patent number: 10745642
    Abstract: Provided herein are methods of recovering oil from microorganisms. The methods are useful, for example, in obtaining nutritional oils and/or lipid biofuels. The methods of recovering oil described herein include contacting a population of microorganisms with one or more enzymes under conditions that cause disruption of the microorganisms, concentrating the disrupted microorganisms, and extracting lipids from the disrupted microorganisms at high temperature in the presence of a salt and in the absence of solvent.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: August 18, 2020
    Assignee: MARA Renewables Corporation
    Inventors: Dorothy A. Dennis, Roberto E. Armenta
  • Patent number: 10676709
    Abstract: Provided herein is a method for obtaining flowable oil comprising the steps of providing a population of oil-producing microorganisms; recovering oil from the microorganisms, wherein the oil is at a first temperature; reducing the first temperature over a first period of time to a second temperature; and applying mechanical energy to the oil during the first period of time thereby producing the flowable oil.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: June 9, 2020
    Assignee: MARA Renewables Corporation
    Inventors: Xuan Jiang, Dorothy Dennis, Roberto E. Armenta
  • Publication number: 20190093043
    Abstract: Provided herein are methods for winterizing oil. The methods include heating the oil to a first temperature and maintaining the oil at the first temperature for a first period of time; reducing the first temperature of the oil after the first period of time to a second temperature over a second period of time, wherein reducing the first temperature produces a first solid fraction and first liquid fraction of the oil; removing the first solid fraction from the oil; reducing the second temperature of the first liquid fraction of the oil over a third period of time to a third temperature, wherein reducing the second temperature of the oil produces a second solid fraction and second liquid fraction of the oil; removing the second solid fraction from the oil; and recovering the second liquid fraction of the oil.
    Type: Application
    Filed: July 31, 2018
    Publication date: March 28, 2019
    Applicant: Mara Renewables Corporation
    Inventors: Xuan Jiang, Dorothy Dennis, Roberto E. Armenta
  • Patent number: 10059906
    Abstract: Provided herein are methods for winterizing oil. The methods include heating the oil to a first temperature and maintaining the oil at the first temperature for a first period of time; reducing the first temperature of the oil after the first period of time to a second temperature over a second period of time, wherein reducing the first temperature produces a first solid fraction and first liquid fraction of the oil; removing the first solid fraction from the oil; reducing the second temperature of the first liquid fraction of the oil over a third period of time to a third temperature, wherein reducing the second temperature of the oil produces a second solid fraction and second liquid fraction of the oil; removing the second solid fraction from the oil; and recovering the second liquid fraction of the oil.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: August 28, 2018
    Inventors: Xuan Jiang, Dorothy Dennis, Roberto E. Armenta
  • Publication number: 20180023032
    Abstract: Provided herein are methods for winterizing oil. The methods include heating the oil to a first temperature and maintaining the oil at the first temperature for a first period of time; reducing the first temperature of the oil after the first period of time to a second temperature over a second period of time, wherein reducing the first temperature produces a first solid fraction and first liquid fraction of the oil; removing the first solid fraction from the oil; reducing the second temperature of the first liquid fraction of the oil over a third period of time to a third temperature, wherein reducing the second temperature of the oil produces a second solid fraction and second liquid fraction of the oil; removing the second solid fraction from the oil; and recovering the second liquid fraction of the oil.
    Type: Application
    Filed: July 20, 2017
    Publication date: January 25, 2018
    Applicant: Mara Renewables Corporation
    Inventors: Xuan Jiang, Dorothy Dennis, Roberto E. Armenta
  • Publication number: 20180023047
    Abstract: Provided herein is a method for obtaining flowable oil comprising the steps of providing a population of oil-producing microorganisms; recovering oil from the microorganisms, wherein the oil is at a first temperature; reducing the first temperature over a first period of time to a second temperature; and applying mechanical energy to the oil during the first period of time thereby producing the flowable oil.
    Type: Application
    Filed: July 20, 2017
    Publication date: January 25, 2018
    Applicant: Mara Renewables Corporation
    Inventors: Xuan Jiang, Dorothy Dennis, Roberto E. Armenta
  • Publication number: 20170321148
    Abstract: Provided herein are methods of recovering oil from microorganisms. The methods are useful, for example, in obtaining nutritional oils and/or lipid biofuels. The methods of recovering oil described herein include contacting a population of microorganisms with one or more enzymes under conditions that cause disruption of the microorganisms, concentrating the disrupted microorganisms, and extracting lipids from the disrupted microorganisms at high temperature in the presence of a salt and in the absence of solvent.
    Type: Application
    Filed: July 25, 2017
    Publication date: November 9, 2017
    Inventors: Dorothy A. Dennis, Roberto E. Armenta
  • Patent number: 9745538
    Abstract: Provided herein are methods of recovering oil from microorganisms. The methods are useful, for example, in obtaining nutritional oils and/or lipid biofuels. The methods of recovering oil described herein include contacting a population of microorganisms with one or more enzymes under conditions that cause disruption of the microorganisms, concentrating the disrupted microorganisms, and extracting lipids from the disrupted microorganisms at high temperature in the presence of a salt and in the absence of solvent.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: August 29, 2017
    Assignee: MARA RENEWABLES CORPORATION
    Inventors: Dorothy A. Dennis, Roberto E. Armenta
  • Patent number: 9745539
    Abstract: Provided herein are methods of recovering oil from microorganisms. The methods are useful, for example, in obtaining nutritional oils and/or lipid biofuels. The methods of recovering oil described herein include contacting a population of microorganisms with one or more enzymes under conditions that cause disruption of the microorganisms, concentrating the disrupted microorganisms, and extracting lipids from the disrupted microorganisms at high temperature in the presence of a salt and in the absence of solvent.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: August 29, 2017
    Inventors: Dorothy A. Dennis, Roberto E. Armenta
  • Publication number: 20160312147
    Abstract: Provided herein are methods of recovering oil from microorganisms. The methods are useful, for example, in obtaining nutritional oils and/or lipid biofuels. The methods of recovering oil described herein include contacting a population of microorganisms with one or more enzymes under conditions that cause disruption of the microorganisms and extracting lipids from the population of microorganisms in the presence of reduced amounts of organic solvent or in the absence of organic solvent.
    Type: Application
    Filed: December 19, 2014
    Publication date: October 27, 2016
    Applicant: DSM NUTRITIONAL PRODUCTS AG
    Inventors: Dorothy A. Dennis, Roberto E. Armenta
  • Publication number: 20160010026
    Abstract: Provided herein are methods of recovering oil from microorganisms. The methods are useful, for example, in obtaining nutritional oils and/or lipid biofuels. The methods of recovering oil described herein include contacting a population of microorganisms with one or more enzymes under conditions that cause disruption of the microorganisms, concentrating the disrupted microorganisms, and extracting lipids from the disrupted microorganisms at high temperature in the presence of a salt and in the absence of solvent.
    Type: Application
    Filed: September 23, 2015
    Publication date: January 14, 2016
    Applicant: MARA RENEWABLES CORPORATION
    Inventors: Dorothy A. Dennis, Roberto E. Armenta
  • Publication number: 20150176042
    Abstract: Provided herein are methods of recovering oil from microorganisms. The methods are useful, for example, in obtaining nutritional oils and/or lipid biofuels. The methods of recovering oil described herein include contacting a population of microorganisms with one or more enzymes under conditions that cause disruption of the microorganisms, concentrating the disrupted microorganisms, and extracting lipids from the disrupted microorganisms at high temperature in the presence of a salt and in the absence of solvent.
    Type: Application
    Filed: December 19, 2014
    Publication date: June 25, 2015
    Inventors: Dorothy A. Dennis, Roberto E. Armenta
  • Publication number: 20060183690
    Abstract: An anti-hypertensive fish protein hydrolysate is provided, wherein the fish is of the genus Salmo or Oncorhynchus, and wherein the fish protein hydrolysate comprises at least 1 peptide selected from the group consisting of: Leu-Ala-Phe, Leu-Thr-Phe, Ile-Ile-Phe, Leu-Ala-Tyr, Ile-Ala-Tyr, Val-Phe-Tyr, Tyr-Ala-Tyr, Val-Leu-Trp, Ile-Ala-Trp, Tyr-Ala-Leu and Tyr-Asn-Arg. Methods of making and methods for using such fish protein hydrolysates are also provided.
    Type: Application
    Filed: February 14, 2005
    Publication date: August 17, 2006
    Inventors: Harry Ewart, Dorothy Dennis, Colin Barrow, Michael Potvin