Patents by Inventor Thomas Grabler

Thomas Grabler 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).

  • Two-stage reactor for the production of melamine
    Publication number: 20060167250
    Abstract: The present invention relates to a process for the catalytic preparation of melamine by decomposition of urea over particular solid catalysts using a main reactor and an after-reactor. A catalyst having a low Lewis acidity is used in the main reactor and a catalyst having an equal or preferably higher Lewis acidity is used in the after-reactor.
    Type: Application
    Filed: January 16, 2004
    Publication date: July 27, 2006
    Applicant: BASF AKTIENGESELLSCHAFT
    Inventors: Christian Kuhrs, Eckehard Danz, Wolfgang Steiner, Ralf-Thomas Rahn, Thomas Grabler, Reiner Geter, Klaus Harth, Markus Holzle
  • Method for the polymerization of cyclic ethers
    Publication number: 20060142543
    Abstract: The present invention relates to a process for preparing polytetrahydrofuran, polytetrahydrofuran copolymer, diester or monoester by polymerizing tetrahydrofuran in the presence of at least one telogen and/or comonomer and of an acidic heterogeneous catalyst based on activated sheet silicates or mixed metal oxides in a fluidized bed.
    Type: Application
    Filed: December 23, 2003
    Publication date: June 29, 2006
    Applicant: BASF Aktiengesellschaft
    Inventors: Stephan Schlitter, Martin Haubner, Peter Zehner, Michael Hesse, Alexander Weck, Rolf Pinkos, Thomas Grabler