Patents by Inventor Wolfgang Arnold

Wolfgang Arnold 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).

  • Light transparent body of coextruded synthetic resin
    Patent number: 4477521
    Abstract: What is disclosed is a light-transparent body comprising a first coextruded layer of a first extrudable light-transparent synthetic resin and a second coextruded layer of a second extrudable light-transparent synthetic resin different from said first resin, wherein said first and second coextruded layers are adjacent and wherein at least said first layer contains a dyestuff capable of fluorescing in the visible region and said second, adjacent, layer is free of the dyestuff present in said first layer.
    Type: Grant
    Filed: April 12, 1982
    Date of Patent: October 16, 1984
    Assignee: Rohm GmbH
    Inventors: Jurgen Lehmann, Heinz Vetter, Wolfgang Arnold