Patents by Inventor Carmen Wiedmann

Carmen Wiedmann 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).

  • Hardeners for cold-curing epoxy systems
    Patent number: 10160826
    Abstract: A hardener composition comprising: a) an isolated adduct comprising a reaction product of i) a polymer with a functionality of at least three, wherein said polymer contains at least one epoxy group; and ii) an amine wherein the isolated adduct is present as an aqueous solution; and b) a capping agent. This hardener can be used with a liquid epoxy resin to form a curable composition.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: December 25, 2018
    Assignee: Dow Global Technologies LLC
    Inventors: Markus Schroetz, Ludwig Huelskaemper, Marcus Pfarherr, Sabine Dobler, Carmen Wiedmann
  • HARDENERS FOR COLD-CURING EPOXY SYSTEMS
    Publication number: 20160053046
    Abstract: A hardener composition comprising: a) an isolated adduct comprising a reaction product of i) a polymer with a functionality of at least three, wherein said polymer contains at least one epoxy group; and ii) an amine wherein the isolated adduct is present as an aqueous solution; and b) a capping agent. This hardener can be used with a liquid epoxy resin to form a curable composition.
    Type: Application
    Filed: March 5, 2014
    Publication date: February 25, 2016
    Inventors: Markus Schroetz, Ludwig Huelskaemper, Marcus Pfarherr, Sabine Dobler, Carmen Wiedmann