Patents by Inventor Esko Heinonen-Person

Esko Heinonen-Person 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 of surface treating high-strength aluminum
    Patent number: 6302976
    Abstract: The disclosure relates to a method of coating a high-strength aluminum object with polymer and surface-treating it, for improved corrosion resistance. A polymer composition is coated onto the surface of the aluminum object and is sintered or melted fast, at the same time as solution treatment for precipitation hardening takes place. The polymer composition substantially comprises a fluorine-containing polymer, preferably PTFE. According to one preferred embodiment of the invention, the polymer coating is sintered or melted fast on the aluminum surface during a time period of approx. 15 minutes at approx. 420 degrees C. After solution treatment and simultaneous surface treatment at elevated temperature, the aluminum object is rapidly cooled to room temperature and precipitation hardened thereafter by means of artificial aging preferably at approx. 120-150 degrees C. for approx. 24 hours.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: October 16, 2001
    Assignee: Tetra Laval Holdings & Finance S.A.
    Inventor: Esko Heinonen-Person