Patents by Inventor Helene Konstantia Vralstad

Helene Konstantia Vralstad 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).

  • Gas hydrate inhibitor, method and use of hyperbranched polyester polyols as gas hydrate inhibitors
    Patent number: 10370581
    Abstract: The present invention relates to a non-toxic and biodegradable low dosage gas hydrate inhibitor comprising hyper-branched polyester polyols having hydroxyl end groups which are chemically modified. Further, the invention relates to a method for controlling gas hydrate formation and plugging of gas hydrate forming fluids and the use of the gas hydrate inhibitors for this purpose.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: August 6, 2019
    Assignee: SINVENT AS
    Inventors: Martin Fossen, Helene Konstantia Vralstad
  • GAS HYDRATE INHIBITOR, METHOD AND USE OF HYPERBRANCHED POLYESTER POLYOLS AS GAS HYDRATE INHIBITORS
    Publication number: 20150252246
    Abstract: The present invention relates to a non-toxic and biodegradable low dosage gas hydrate inhibitor comprising hyper-branched polyester polyols having hydroxyl end groups which are chemically modified. Further, the invention relates to a method for controlling gas hydrate formation and plugging of gas hydrate forming fluids and the use of the gas hydrate inhibitors for this purpose.
    Type: Application
    Filed: October 28, 2013
    Publication date: September 10, 2015
    Inventors: Martin Fossen, Helene Konstantia Vralstad