Patents by Inventor Arne Stavland

Arne Stavland 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).

  • METHOD FOR TERTIARY PETROLEUM RECOVERY BY MEANS OF A HYDROPHOBICALLY ASSOCIATING POLYMER
    Publication number: 20190031946
    Abstract: A method of tertiary production of mineral oil from underground deposits having a deposit temperature of ?70° C., in which a copolymer comprising (meth)acrylamide or derivatives thereof, monoethylenically unsaturated carboxylic acids, especially acrylic acid, and an associative monomer is used, wherein the amount of the associative monomer is 0.1% to 0.9% by weight. A water-soluble copolymer comprising (meth)acrylamide or derivatives thereof, monoethylenically unsaturated carboxylic acids, especially acrylic acid, and 0.1% to 0.9% by weight of an associative monomer.
    Type: Application
    Filed: January 4, 2017
    Publication date: January 31, 2019
    Inventors: ROLAND RECHENBACH-KLINKE, Christian BITTNER, Tobias ZIMMERMANN, Arne STAVLAND
  • Emulsified gelant
    Publication number: 20080009424
    Abstract: Composition and a process for reducing the water permeability more than the oil permeability using an gelant emulsified in oil. The use of a composition comprising an aqueous gelant emulsified in oil is also included in the present invention.
    Type: Application
    Filed: May 21, 2007
    Publication date: January 10, 2008
    Inventors: Arne Stavland, Svante Nilsson