Patents by Inventor Svein Åge Holen

Svein Åge Holen 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).

  • System for inspection of pipelines
    Patent number: 6240160
    Abstract: A system for inspecting pipelines, especially in the coupling between pipe parts, comprises a radiation source and a detector device or a photographic film. The pipeline includes indicators which are laid into the pipeline material and have a differing absorption of radiation than the material comprising the layers of the pipeline in which the indicators are formed. By placing the radiation source and the detector device (or photographic film) on opposite sides of the pipeline, or on opposite sides of a wall of the pipeline, the position of the indicators may be detected, and any displacement can be measured.
    Type: Grant
    Filed: June 14, 1999
    Date of Patent: May 29, 2001
    Assignee: Den Norske Stats Oljeselskap A.S.
    Inventors: Alf Daaland, Svein Åge Holen