Patents by Inventor Adolf Ahrens

Adolf Ahrens 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).

  • Film with a security feature, a process for the production thereof and the use thereof as packaging material
    Patent number: 6364363
    Abstract: An optionally laminated film of plastics is described, characterised in that the film is printed on one side with a security ink. A process for the production of such a film and the use thereof as a packaging material are also described.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: April 2, 2002
    Assignee: Wolff Walsrode AG
    Inventors: Olaf Stöber, Christian Kuckertz, Adolf Ahrens
  • Film with protective feature, a method of producing it and also its use as packaging material
    Patent number: 6346321
    Abstract: A plastic film comprising a plastic resin having imprinted on one of its surfaces a microtyped marking is disclosed. The film, optionally in the form of a laminate with a film of polymeric material, paper or metal foil is useful as packaging material.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: February 12, 2002
    Assignee: Wolff Walsrode AG
    Inventors: Olaf Stöber, Christian Kuckertz, Adolf Ahrens