Patents by Inventor John F. Partanen

John F. Partanen 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).

  • Synthetic asphalt mixtures and processes for making them
    Patent number: 4437896
    Abstract: Synthetic asphalt mixtures comprise selective blends of tall oil and/or tall oil pitch and naturally occurring or man-made gilsonite.
    Type: Grant
    Filed: February 8, 1983
    Date of Patent: March 20, 1984
    Inventor: John F. Partanen