Patents by Inventor Dirk Dijkstra

Dirk Dijkstra 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: 9546490
    Abstract: A method for reinforcing a part of a building comprises the step of adhesively bonding a textile to the surface of the part of a building by means of an adhesive. The invention relates further to such a reinforced part of a building and to the use of a textile in combination with an adhesive for reinforcing a part of a building, wherein the textile is adhesively bonded to the surface of the part of a building by means of an adhesive.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: January 17, 2017
    Assignee: COVESTRO DEUTSCHLAND AG
    Inventors: Harald Kraus, Wolfgang Arndt, Matthias Wintermantel, Heinz-Werner Lucas, Dirk Dijkstra, Lothar Stempniewski, Moritz Urban
  • Patent number: 9195215
    Abstract: This invention relates to a holographic medium comprising a protective layer and a photopolymer film which is bonded to the protective layer and contains polyurethane matrix polymers, acrylate writing monomers and photoinitiators, wherein the protective layer is impermeable to the constituents of the photopolymer film, is optically clear and is transparent to electromagnetic radiation having a wavelength in the range of from 350 to 800 nm. The invention further provides the use of a holographic medium according to the invention in the production of holograms, and a process for the production of a holographic medium according to the invention.
    Type: Grant
    Filed: November 11, 2012
    Date of Patent: November 24, 2015
    Assignee: Bayer Intellectual Property GmbH
    Inventors: Marc-Stephan Weiser, Daniel Hentschel, Joachim Petzoldt, Pantea Nazaran, Sebastian Dörr, Dirk Dijkstra, Ute Flemm, Dennis Hönel, Friedrich-Karl Bruder, Thomas Fäcke, Thomas Rölle
  • Patent number: 8980407
    Abstract: The invention relates to an aqueous adhesive composition containing at least one acrylate polymer with a glass transition temperature Tg>50° C. and at least one amorphous polyurethane or polyurethane-polyurea polymer with a glass transition temperature Tg<+10° C., the use of the adhesive compositions for the manufacture of heat-activated adhesive layers, and planar formations containing adhesive layers based on the adhesive composition.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: March 17, 2015
    Assignee: Bayer Intellectual Property GmbH
    Inventors: Jörg Büchner, Harald Kraus, Pantea Nazaran, Dirk Dijkstra
  • Publication number: 20140295329
    Abstract: This invention relates to a holographic medium comprising a protective layer and a photopolymer film which is bonded to the protective layer and contains polyurethane matrix polymers, acrylate writing monomers and photoinitiators, wherein the protective layer is impermeable to the constituents of the photopolymer film, is optically clear and is transparent to electromagnetic radiation having a wavelength in the range of from 350 to 800 nm. The invention further provides the use of a holographic medium according to the invention in the production of holograms, and a process for the production of a holographic medium according to the invention.
    Type: Application
    Filed: November 11, 2012
    Publication date: October 2, 2014
    Applicant: Bayer Intellectual Property GmbH
    Inventors: Marc-Stephan Weiser, Daniel Hentschel, Joachim Petzoldt, Pantea Nazaran, Sebastian Dörr, Dirk Dijkstra, Ute Flemm, Dennis Hönel, Friedrich-Karl Bruder, Thomas Fäcke, Thomas Rölle
  • Publication number: 20140215948
    Abstract: A method for reinforcing a part of a building comprises the step of adhesively bonding a textile to the surface of the part of a building by means of an adhesive. The invention relates further to such a reinforced part of a building and to the use of a textile in combination with an adhesive for reinforcing a part of a building, wherein the textile is adhesively bonded to the surface of the part of a building by means of an adhesive.
    Type: Application
    Filed: August 6, 2012
    Publication date: August 7, 2014
    Applicants: KARLSRUHER INSTITUT FÜR TECHNOLOGIE, BAYER INTELLECTUAL PROPERTY GMBH
    Inventors: Harald Kraus, Wolfgang Arndt, Matthias Wintermantel, Heinz-Werner Lucas, Dirk Dijkstra, Lothar Stempniewski, Moritz Urban
  • Publication number: 20130143010
    Abstract: The invention relates to an aqueous adhesive composition containing at least one acrylate polymer with a glass transition temperature Tg>50° C. and at least one amorphous polyurethane or polyurethane-polyurea polymer with a glass transition temperature Tg<+10° C., the use of the adhesive compositions for the manufacture of heat-activated adhesive layers, and planar formations containing adhesive layers based on the adhesive composition.
    Type: Application
    Filed: June 3, 2011
    Publication date: June 6, 2013
    Applicant: Bayer Intellectual Property GmbH Creative Campus Monheim
    Inventors: Jörg Büchner, Harald Kraus, Pantea Nazaran, Dirk Dijkstra
  • Publication number: 20120112133
    Abstract: The invention relates to semicrystalline polyurethane (PU) compositions which have been filled with carbon nanotubes (CNTs) and have improved electrical properties, and which are obtainable on the basis of water-based polyurethane-CNT mixtures. The invention further relates to a process for producing the polyurethane compositions, in which water-based polyurethane latices are mixed with carbon nanotubes dispersed in water. The invention further relates to films produced by pressurized injection moulding processes or processing of casting solutions.
    Type: Application
    Filed: March 5, 2010
    Publication date: May 10, 2012
    Applicant: Bayer MaterialScience AG
    Inventors: Stefan Bahnmüller, Helmut Meyer, Dirk Dijkstra, Wolfgang Henning, Cornelis Eme Koning, Jan Hein Van Steenis, Steffan Franciscus Marjo Mulders