Patents by Inventor Christian Erdelen

Christian Erdelen 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: 5258262
    Abstract: Radiation-sensitive film composed of at least one monomolecular layer of fluorine-containing amphiphiles. If a vinyl monomer containing fluoroalkyl side groups is copolymerized with a vinyl monomer containing oxirane groups, an amphiphilic polymer is obtained. To prepare a sandwich, a polymer is dissolved in a volatile organic solvent which is immiscible with water, the solution is spread on the water/air boundary surface, the resultant layer is compressed after the solvent has evaporated and transferred to a solid layer support by the Langmuir-Blodgett technique. The oxirane rings are cleaved and the film crosslinked by the action of high-energy radiation on the film.
    Type: Grant
    Filed: September 13, 1991
    Date of Patent: November 2, 1993
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Christian Erdelen, Helmut Ringsdorf, Werner Prass, Ude Scheunemann
  • Patent number: 4960635
    Abstract: The film consists of one or more Langmuir-Blodgett layers, the layer containing an organic polymer having long-chain fluoroalkyl side groups or consisting of this compound. The film is distinguished by a multilayer structure having few defects and is, for example, suitable for optical purposes and for surface treatment. The order of the molecules in the multilayer can be improved by annealing and by heating the film through the phase transition and cooling again.
    Type: Grant
    Filed: September 15, 1988
    Date of Patent: October 2, 1990
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Christian Erdelen, Helmut Ringsdorf, Werner Prass, Ude Scheunemann