Patents by Inventor Asbjorn L. Olsen

Asbjorn L. Olsen 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 the electrolytical metal coating of magnesium articles
    Patent number: 4349390
    Abstract: Improved method of producing adherent metallic coatings on articles made from magnesium is disclosed. The articles are exposed to a two-step surface activating prior to chemical precipitation of zinc deposit. The first activating is carried out in a solution of oxalic acid and after rinsing a secondary activating takes place in a special bath comprising alkali metal pyrophosphate and, preferably, an added wetting agent. The pyrophosphate is preferably potassium pyrophosphate K.sub.4 P.sub.2 O.sub.7.
    Type: Grant
    Filed: November 19, 1980
    Date of Patent: September 14, 1982
    Assignee: Norsk Hydro a.s.
    Inventors: Asbjorn L. Olsen, Sigbjorn T. Halvorsen