Patents by Inventor Jurgen Ramthun

Jurgen Ramthun 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).

  • Reactive polyurethane hotmelts with large PSA range
    Patent number: 7268183
    Abstract: Reactive polyurethane hotmelts comprising crystallizing polyesterpolyols based on fumaric acid and 1,6-hexanediol. These hotmelts exhibit good pressure-sensitive adhesive (PSA) properties over a very broad temperature range. The reactive polyurethane hotmelts are prepared by mixing a polyol mixture containing at least on crystallizing polyesterpolyol with an excess of polyisocyanates.
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: September 11, 2007
    Assignee: Bayer MaterialScience AG
    Inventors: Matthias Wintermantel, Hermann Perrey, Christian Wamprecht, Walter Meckel, Jürgen Ramthun
  • Solar modules with a transparent polyurethane front side and a process for producing same
    Patent number: 7049803
    Abstract: Solar modules in which the front side is composed of transparent polyurethane are made by RIM, injection molding and casting processes and combinations thereof.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: May 23, 2006
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karl-Heinz Dörner, Hubert Ehbing, Christian Hässler, Jürgen Ramthun, Gunther Stollwerck, Robert Eiben, Michael Niedermeyer, Peter Schuster
  • Reactive polyurethane hotmelts with large PSA range
    Publication number: 20040068049
    Abstract: Reactive polyurethane hotmelts comprising crystallizing polyesterpolyols based on fumaric acid and 1,6-hexanediol. These hotmelts exhibit good pressure-sensitive adhesive (PSA) properties over a very broad temperature range. The reactive polyurethane hotmelts are prepared by mixing a polyol mixture containing at least on crystallizing polyesterpolyol with an excess of polyisocyanates.
    Type: Application
    Filed: August 15, 2003
    Publication date: April 8, 2004
    Inventors: Matthias Wintermantel, Hermann Perrey, Christian Wamprecht, Walter Meckel, Jurgen Ramthun
  • Solar modules with a transparent polyurethane front side and a process for producing same
    Publication number: 20020148496
    Abstract: Solar modules in which the front side is composed of transparent polyurethane are made by RIM, injection molding and casting processes and combinations thereof.
    Type: Application
    Filed: January 14, 2002
    Publication date: October 17, 2002
    Inventors: Karl-Heinz Dorner, Hubert Ehbing, Christian Hassler, Jurgen Ramthun, Gunther Stollwerck, Robert Eiben, Michael Niedermeyer, Peter Schuster
  • Compositions of the ABS type for processing by extrusion and deep drawing
    Patent number: 5804656
    Abstract: Compositions of the ABS type containingA) one or more graft rubbers ofA.1) from 10 to 60 parts by weight of one or more monomers onA.2) from 40 to 90 parts by weight of one or more rubber backbones having glass transition temperatures <0.degree.C. andB) at least one rubber-free thermoplastic resin obtained by radical polymerisation of resin-forming monomers,wherein the rubber backbone A.2) has average particle diameters (d.sub.50 values) of from 0.20 to 0.35 .mu.m and the graft rubber A) has been produced by radical emulsion graft polymerisation with the use of an initiator system comprising organic hydroperoxide and an organic reducing agent, and the use thereof for the production of mouldings by deep drawing.
    Type: Grant
    Filed: January 6, 1997
    Date of Patent: September 8, 1998
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Peter Kruger, Harry Staratschek, Edgar Leitz, Dieter Wittman, Karl-Erwin Piejko, Jurgen Ramthun