Patents by Inventor Joachim Preiss

Joachim Preiss 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).

  • Patent number: 5566889
    Abstract: Disclosed is a process for the production of a recycled plastic product from varnished plastic parts by multistagedly grinding but not pulverizing while at the same time subjecting same to a stretching treatment during the pulverizing step to loosen substantially completely all of the varnish sticking thereto. The resulting plastic and varnish particles are separated and thereafter packaged, typically, in the form of granulate. The resulting thermoplastic plastic recycled material does not contain any visible inclusions of more than 0.25 mm.sup.2 of varnished particles in the sheet test.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: October 22, 1996
    Assignee: Montell North America Inc.
    Inventor: Joachim Preiss