Patents by Inventor Fritz Blom

Fritz Blom 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).

  • Apparatus for oxygenating an extruded molten polyethylene film
    Patent number: 4405404
    Abstract: In a method of oxygenating an extruded molten polyethylene film before it is pressed onto a carrier web between a pressure roller and a backing roller, ozone is blown onto the web substantially in the direction of web movement in the zone thereof where it enters the nip of the rollers.
    Type: Grant
    Filed: December 1, 1981
    Date of Patent: September 20, 1983
    Assignee: Windmoller & Holscher
    Inventor: Fritz Blom