Patents by Inventor Siegfried Krupke

Siegfried Krupke 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).

  • USE OF A HALOGEN-FREE FILM IN AN ADHESIVE MASKING TAPE, THE FILM BEING TEARABLE TRANSVERSELY AS A RESULT OF ELECTRON BEAM IRRADIATION
    Publication number: 20090277577
    Abstract: A masking tape for use preferably in the two-tone painting of plastic components for external mounting incorporates a halogen-free film composed of polyolefins, specifically a mixture composed of a polypropylene or a polypropylene copolymer and of a further polymer, selected from the group of the polyethylenes or ethylene copolymers, the film, before or after coating with the adhesive, being irradiated with electron beams, with a dose between 5 and 100 kGy (Kilograys), and the weight fraction of polypropylene or of polypropylene copolymer being at least 20%, based on the entirety of the polyolefins.
    Type: Application
    Filed: May 16, 2007
    Publication date: November 12, 2009
    Applicant: TESA AG
    Inventors: Nicolai Böhm, Siegfried Krupke
  • TEAR PROPAGATION-RESISTANT ADHESIVE TAPE
    Publication number: 20070184242
    Abstract: Adhesive tape having a backing material applied to at least one side of which is an adhesive, in particular a pressure-sensitive adhesive, the backing material being composed of a laminate of at least one supporting film and one slitted film, characterized in that the slitted film has at least one slit extending in the machine direction of the adhesive tape.
    Type: Application
    Filed: November 2, 2006
    Publication date: August 9, 2007
    Applicant: TESA AG
    Inventors: Ilse Rodewald, Norbert Grittner, Petra Yun, Michael Rohl, Siegfried Krupke, Michael Schwertfeger
  • Adhesive tape, especially for masking of window flanges
    Publication number: 20060141247
    Abstract: A self-adhesive tape intended in particular for masking window flanges of automobiles, comprising a backing composed of two films disposed one above the other, the first film being composed of plasticized polyvinyl chloride (soft or sPVC) and the second of polyethylene terephthalate (PET) and the two films being joined with a laminating adhesive comprising a crosslinked, tackifier-resin-free acrylic ester polymer, characterized by a microshear travel of less than 60 ?m (for a coat weight of 25 g/m2) and a delamination force of more than 3 N/cm, and also comprising a self-adhesive mass applied to the backing.
    Type: Application
    Filed: July 7, 2005
    Publication date: June 29, 2006
    Applicant: tesa Aktiengesellschaft
    Inventors: Nicolai Bohm, Siegfried Krupke
  • Adhesive tape with thermally curable backing for masking a cathodic electrocoat primer
    Patent number: 6599624
    Abstract: An adhesive tape provided on one side with a self-adhesive composition and comprising a backing material comprising a polyester film coated with a crosslinked, thermally vulcanizable polyurethane.
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: July 29, 2003
    Assignee: tesa AG
    Inventors: Uwe Schümann, Nicolai Böhm, Siegfried Krupke, Ulrike Wappler
  • Adhesive tape with thermally curable backing for masking a cathodic electrocoat primer
    Publication number: 20020114948
    Abstract: An adhesive tape provided on one side with a self-adhesive composition and comprising a backing material comprising a polyester film coated with a crosslinked, thermally vulcanizable polyurethane.
    Type: Application
    Filed: December 14, 2000
    Publication date: August 22, 2002
    Inventors: Uwe Schumann, Nicolai Bohm, Siegfried Krupke, Ulrike Wappler
  • Adhesive tape, in particular for masking a cathodic electrocoat primer
    Publication number: 20010055679
    Abstract: An adhesive tape provided on one side with a self-adhesive composition and comprising a backing material comprising a polyester film coated with a crosslinked epoxy resin.
    Type: Application
    Filed: December 13, 2000
    Publication date: December 27, 2001
    Inventors: Uwe Schumann, Nicolai Bohm, Siegfried Krupke, Ulrike Wappler