Patents by Inventor Sylvia Braun

Sylvia Braun 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).

  • Polyformals as a coextrusion protective layer on polycarbonate
    Patent number: 7691477
    Abstract: A multi-layer article is disclosed. The article contains a base layer that contains at least one thermoplastic resin and a second layer containing a thermoplastic (co)polyformal superimposed over the base layer. The (co)polyformal conforms to formulae (1a) or (1b), in which O-D-O and O-E-O independently denote a diphenolate group, -D- and -E- independently denote an aromatic group having 6 to 40 carbon atoms, k is a whole number from 1 to 1500, o stands for numbers from 1 to 1500, and m is z/o and n is (o-z)/o wherein z is 0 to o.
    Type: Grant
    Filed: October 6, 2005
    Date of Patent: April 6, 2010
    Assignee: Bayer MaterialScience AG
    Inventors: Helmut-Werner Heuer, Rolf Wehrmann, Sylvia Braun, Claus Rüdiger, Marco Roelofs, Wolfgang Nising, Siegfried Anders, Jürgen Röhner, Rüdiger Gorny, Ralf Hufen
  • Polyformals as a coextrusion protective layer on polycarbonate
    Publication number: 20060251900
    Abstract: A multi-layer article is disclosed. The article contains a base layer that contains at least one thermoplastic resin and a second layer containing a thermoplastic (co)polyformal superimposed over the base layer. The (co)polyformal conforms to formulae (1a) or (1b), in which O-D-O and O-E-O independently denote a diphenolate group, -D- and -E- independently denote an aromatic group having 6 to 40 C atoms, k is a whole number from 1 to 1500 and m is z/o and n is (o-z)/o wherein z is 0 to o. The multi-layer article that may be prepared by co-extrusion exhibits improved properties.
    Type: Application
    Filed: October 6, 2005
    Publication date: November 9, 2006
    Inventors: Helmut-Werner Heuer, Rolf Wehrmann, Sylvia Braun, Claus Rudiger, Marco Roelofs, Wolfgang Nising, Siegfried Anders, Jurgen Rohner, Rudiger Gorny, Ralf Hufen
  • Polyformals as a coextrusion protective layer on polycarbonate
    Publication number: 20050031855
    Abstract: A multi-layer article is disclosed. The article contains a base layer that contains at least one thermoplastic resin and a second layer containing a thermoplastic (co)polyformal superimposed over the base layer. The (co)polyformal conforms to formulae (1a) or (1b), ?O-D-O—CH2?k??1a ??O-D-O—CH2?mO?E-O—CH2?n?o??1b in which O-D-O and O-E-O independently denote a diphenolate group, -D- and -E- independently denote an aromatic group having 6 to 40 C atoms, k is a whole number from 1 to 1500 and m is z/o and n is (o?z)/o wherein z is 0 to o. The multi-layer article that may be prepared by co-extrusion exhibits improved properties.
    Type: Application
    Filed: July 20, 2004
    Publication date: February 10, 2005
    Inventors: Helmut-Werner Heuer, Rolf Wehrmann, Sylvia Braun, Claus Rudiger, Marco Roelofs, Wolfgang Nising, Siegfried Anders, Jurgen Rohner, Rudiger Gorny