Patents by Inventor Johan Harmsen

Johan Harmsen 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: 5786442
    Abstract: A polyester mixture is prepared composed of a diol, a dicarboxylic acid and optionally a monofunctional compound as a chain stopper, in which there is less than 3 wt. % of compounds having a molecular weight of up to 800. The process preferably involves stripping off volatile components from the mixture, for example by molecular distillation. The mixture may be used for forming shaped plastic objects for use in car interiors.
    Type: Grant
    Filed: October 23, 1990
    Date of Patent: July 28, 1998
    Assignee: Unilever Patent Holdings B.V.
    Inventor: Johan Harmsen
  • Patent number: 4751121
    Abstract: The invention describes a multi-ply, self-adhesive and deep-drawable protective sheet, especially for the internal and external outfitting of automotive vehicles, consisting of a carrier sheet containing a thermoplastic synthetic resin based on an ethylene-propylene-diene terpolymer and/or an ethylene-propylene copolymer and a homo- and/or copolymer of propylene, small amounts of fillers and conventional additives; a pressure-sensitive adhesive layer based on an alkyl acrylate and/or methacrylate and/or a copolymerizable, ethylenically unsaturated monomer, such as acylic acid, and a cover layer of a unilaterally siliconized polyolefin film.
    Type: Grant
    Filed: May 28, 1986
    Date of Patent: June 14, 1988
    Assignee: Huels Troisdorf Aktiengesellschaft
    Inventors: Werner Kuhnel, Manfred Simm, Paul Spielau, Rudolf Kautz, Johan Harmsen, Henk van der Mey