Patents by Inventor Endre Birkeland

Endre Birkeland 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).

  • Acid block and method of local acid treatment of subsea connecting element
    Patent number: 10041334
    Abstract: An acid block is for local acid treatment of a subsea connecting element, which is in need of cleaning by acid treatment. A block element, which is formed from an acid or an acid residue in solid form, is formed for positioning on or at a portion of the connecting element, for example a connecting interface formed according to an API standard. A method is for acid treatment of a subsea connecting element, which is in need of cleaning by acid treatment.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: August 7, 2018
    Assignee: Jupa AS
    Inventors: John Harald Schjelderup, Endre Birkeland, Hallvar Møller
  • Acid Block and Method of Local Acid Treatment of Subsea Connecting Element
    Publication number: 20160194547
    Abstract: An acid block is for local acid treatment of a subsea connecting element, which is in need of cleaning by acid treatment. A block element, which is formed from an acid or an acid residue in solid form, is formed for positioning on or at a portion of the connecting element, for example a connecting interface formed according to an API standard. A method is for acid treatment of a subsea connecting element, which is in need of cleaning by acid treatment.
    Type: Application
    Filed: August 27, 2014
    Publication date: July 7, 2016
    Applicant: Jupa AS
    Inventors: John Harald Schjelderup, Endre Birkeland, Hallvar Møller