Patents by Inventor Roy Eivind Antonsen

Roy Eivind Antonsen 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).

  • Corrosion protection for subsea lines
    Patent number: 6012495
    Abstract: The present invention relates to a subsea line comprising a number of fluid/gas conducting steel tubes (1, 3) and possibly other elongated elements (4) like electrical conductors and cables enclosed, and containing elongated sacrificial elements. At least one of the tubes (1, 3) is made of carbon steel and that at least one sacrificial element (2, 5) which is constituted by one or more tapes or strips made of a material less noble than steel is in substantially continuous contact with the surface(s) of at least one carbon steel tube. The line may include a sea water permeable outer cover (6).
    Type: Grant
    Filed: August 1, 1997
    Date of Patent: January 11, 2000
    Assignee: Alcatel
    Inventor: Roy Eivind Antonsen