Patents by Inventor Jonathan Curtis

Jonathan Curtis 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).

  • BIOBASED CURING AGENTS FOR EPOXY RESINS
    Publication number: 20230331905
    Abstract: Curing agents for epoxy monomers are prepared from the partial esterification of citric acid with certain alkyl or alkenyl alcohols. These curing agents, which contain mixtures of unreacted citric acid and monoalkyl or monoalkenyl citrate, and which are substantially free of trialkyl or trialkenyl citrate, are used without co-solvents for preparing biobased resins from plant oil-derived epoxides. The resulting biobased resins can in turn be used to prepare thermo set materials and biocomposites.
    Type: Application
    Filed: September 21, 2021
    Publication date: October 19, 2023
    Applicant: THE GOVERNORS OF THE UNIVERSITY OF ALBERTA
    Inventors: Jonathan CURTIS, Vinay PATEL
  • ALDEHYDE FREE THERMOSET BIORESINS AND BIOCOMPOSITES
    Publication number: 20160215088
    Abstract: Aldehyde-free bio-based resin and composite materials include flexible or rigid thermoset resins of epoxidized oils derived from unsaturated oils which are cured with crosslinking carboxylic acids, natural food acids, anhydrides and acid anhydrides, and may be combined with different lignocellulosic fibers, forestry products or waste, with up to 100% renewable content.
    Type: Application
    Filed: November 12, 2013
    Publication date: July 28, 2016
    Applicant: THE GOVERNORS OF THE UNIVERSITY OF ALBERTA
    Inventors: Tolibjon OMONOV, Jonathan CURTIS
  • Polyol synthesis from fatty acids and oils
    Patent number: 9216940
    Abstract: A method for preparing polyols from fatty acid substrates such as free fatty acids, alkyl esters of fatty acids, mono-glycerides, diglycerides, and triglycerides. The method comprises the steps of (a) epoxidizing an unsaturated fatty acid substrate and (b) hydroxylating the epoxidized fatty acid substrate with at least one diol to produce a polyol or a blend of polyols. The method may be varied to produce polyols with desired functionality, molecular weights, or viscosity.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: December 22, 2015
    Assignee: THE GOVERNORS OF THE UNIVERSITY OF ALBERTA
    Inventors: Jonathan Curtis, Guoguang Liu, Tolibjon Omonov, Ereddad Kharraz
  • POLYOL SYNTHESIS FROM FATTY ACIDS AND OILS
    Publication number: 20130274494
    Abstract: A method for preparing polyols from fatty acid substrates such as free fatty acids, alkyl esters of fatty acids, mono-glycerides, diglycerides, and triglycerides. The method comprises the steps of (a) epoxidizing an unsaturated fatty acid substrate and (b) hydroxylating the epoxidized fatty acid substrate with at least one diol to produce a polyol or a blend of polyols. The method may be varied to produce polyols with desired functionality, molecular weights, or viscosity.
    Type: Application
    Filed: July 21, 2011
    Publication date: October 17, 2013
    Applicant: THE GOVERNORS OF THE UNIVERSITY OF ALBERTA
    Inventors: Jonathan Curtis, Guoguang Liu, Tolibjon Omonov, Ereddad Kharraz
  • Homogenized formulations containing microcapsules and methods of making and using thereof
    Publication number: 20070269566
    Abstract: Disclosed are homogenized formulations that comprise microcapsules. Also, disclosed are methods of making and using the disclosed homogenized formulations.
    Type: Application
    Filed: May 17, 2006
    Publication date: November 22, 2007
    Inventors: Jonathan Curtis, Wei Zhang, Sharon Spurvey, Suzelle Robert
  • Microcapsules and emulsions containing low bloom gelatin and methods of making and using thereof
    Publication number: 20060165990
    Abstract: Described herein are microcapsules and emulsions prepared from low Bloom gelatin and methods of making and using thereof.
    Type: Application
    Filed: September 15, 2005
    Publication date: July 27, 2006
    Inventors: Jonathan Curtis, Wei Zhang, Yulai Jin