Patents by Inventor Franz Gubitz

Franz Gubitz 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).

  • Liquid filter
    Patent number: 5695638
    Abstract: A liquid filter for purifying mineral oil, the components of which are composed of a thermoplastic polymer, preferably polyacetal, is produced by welding the individual parts. Since no foreign materials are present, the filter can be subjected to a recycling process easily and without problem.
    Type: Grant
    Filed: February 13, 1996
    Date of Patent: December 9, 1997
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Franz Gubitz, Gunther Reitzel
  • Composite article of a carrier layer and decorative layer, and a process for its production
    Patent number: 5532065
    Abstract: A composite article of a massive carrier layer of a polyester material which can comprise up to 50% by weight of another polymer material which is compatible with it, and if appropriate up to 50% by weight of reinforcing and/or filling additives and other auxiliaries, and a decorative layer, which is built up, if appropriate, from several layers of materials which influence the visual properties and/or haptic properties and which all essentially comprise polyester material, the carrier layer of which is anchored undetachably in the contact area with the layer of material of the decorative layer which is in contact with it, the layers of the composite article in their entirety having a composition such that a homogeneous mixture of the same composition can be employed again to produce a structural element of plastic which has adequate mechanical data, is described.A process for the production of these composite articles furthermore is described.
    Type: Grant
    Filed: September 27, 1993
    Date of Patent: July 2, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Franz Gubitz, Jean-Pierre Nething, Mathias Schremmer
  • Process for the production of a polypropylene composite
    Patent number: 5300361
    Abstract: In composites comprising at least one solid base layer of a propylene polymer and a foam layer likewise of a propylene polymer, these layers can be bonded by softening only the side of the base layer facing the foam layer and optionally provided with relief structures by warming, and pressing the base layer and foam layer together, giving a very strong bond.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: April 5, 1994
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hans Vowinkel, Franz Gubitz, Rolf Orth
  • Plastic molding having a painted surface
    Patent number: 5208081
    Abstract: Plastic moldings, preferably comprising a polypropylene molding composition comprising from 95 to 50 parts by weight of isotactic polypropylene or a copolymer of propylene containing up to 10% by weight of ethylene, from 5 to 50 parts by weight of rubber-like, polypropylene-compatible copolymers and from 0 to 50 parts by weight of reinforcing fillers in the underlayer, suitably colored and provided with a single-layer paint coat, are highly suitable for external applications on automobiles.
    Type: Grant
    Filed: August 8, 1991
    Date of Patent: May 4, 1993
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Franz Gubitz, Volker Ritter, deceased, Ursula J. Ritter, nee Zoller, legal heir
  • Shaped plastic article having a grained surface of improved scratch resistance
    Patent number: 5165982
    Abstract: The scratch resistance of plastic surfaces can be improved by providing the surfaces with a novel grain structure.
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: November 24, 1992
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Franz Gubitz, Walter Grolik, Eckhard Kuhnhenne, Peter Jaksch