Patents by Inventor Dirk Leistner

Dirk Leistner 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).

  • Publication number: 20190293436
    Abstract: The invention relates to a method for updating a digital map of a mobile navigation system, in particular a navigation system of a motor vehicle, wherein the updating of map data is improved with respect to the availability of current map data and the minimization of the data volume to be transferred (and thus also the avoidance of the updating of map data that are not required at all). For this purpose, a geographic region comprised by the digital map is divided into a plurality of regions, wherein map data of the digital map represent respective regions, wherein at least one of the regions has a first boundary line directly surrounding the region, wherein the region has an additional boundary line, which surrounds the region with greater distance than the first boundary line at least in some sections.
    Type: Application
    Filed: June 10, 2019
    Publication date: September 26, 2019
    Inventors: Sascha FLOSSBACH, Dirk LEISTNER, Werner RICHTER, Dimitri SCHECHTER
  • Patent number: 6136926
    Abstract: Cross-linkable, olefinic polymers synthesized from mixtures of olefinic polymers and ethylenically unsaturated organosilane compounds, which can be grafted, by a 2-step method using thermally decomposing free radical-forming agents by heating the mixtures to a temperature of to C. below the softening temperature or the crystallite melting point of the olefinic polymers used and subsequently heating the mixtures to a reaction temperature of to 60 .degree. C. below the softening temperature or the crystallite melting point of the olefinic polymers used. In the alternative, they can be grafted by a method involving the action of ionizing radiation with simultaneous absorption of organosilane compounds and the action of radiation. The method is suitable for producing films, sheets, fibers, panels, coatings, pipes, hollow objects, foamed materials and molded articles.
    Type: Grant
    Filed: July 22, 1997
    Date of Patent: October 24, 2000
    Assignee: Borealis GmbH
    Inventors: Manfred Raetzsch, Achim Hesse, Harmut Bucka, Dirk Leistner, Sergej Ivanchev, Saul Heikin, Alla Mesh, Moisej Pukschanski
  • Patent number: 5929127
    Abstract: Fine-celled polyolefin foams of high dimensional stability at elevated temperatures and high stiffness, with foam densities ranging from 10 to 600 kg/m.sup.3, consisting of mixtures of polypropylenes and polyolefins, which were reacted with bifunctional, unsaturated monomers and/or hydrolyzable, ethylenically unsaturated organosilane compounds in the presence of thermally decomposing free radical-forming agents in two reactive process steps and subsequently foamed. The fine-celled polyolefin foams are suitable for use in the packaging sector, preferably for packaging foods, for external and internal parts of motor vehicles and for components of electric and electronic equipment.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: July 27, 1999
    Assignee: Borealis AG
    Inventors: Manfred Raetzsch, Hartmut Bucka, Ulf Panzer, Achim Hesse, Norbert Reichelt, Dirk Leistner
  • Patent number: 5665820
    Abstract: Elastomeric polypropylenes modified by grafting and blends thereof with isotactic polypropylenes modified by grafting, and the use thereof as compatibilizers or adhesion promoters for blends and metal composites.
    Type: Grant
    Filed: October 11, 1995
    Date of Patent: September 9, 1997
    Assignee: PCD Polymere Gesellschaft m.b.H.
    Inventors: Dirk Leistner, Manfred Ratzsch, Achim Hesse, Norbert Hafner, Markus Gahleitner, Klaus Bernreitner
  • Patent number: 5091494
    Abstract: The invention relates to new aromatic/aliphatic and/or alicyclic copolyester amides with high molecular weights, without crosslinking. A subsequent solid phase condensation is avoided or is greatly limited in time. The occurrence of thermal decomposition reactions, dark discolorations of the polymers as well as the formation of block structures are avoided.
    Type: Grant
    Filed: July 30, 1990
    Date of Patent: February 25, 1992
    Assignee: Akademie der Wissenschaften der DDR
    Inventors: Dirk Leistner, Frank Bohme, Doris Pospiech, Manfred Ratzsch, Christian Vieth, Michael Stephan