Patents by Inventor Tom Fremau

Tom Fremau 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).

  • Process for preparing pure triethanolamine (TEOA)
    Patent number: 8466323
    Abstract: A process for preparing pure triethanolamine (TEOA) by continuously distillatively separating an ethanolamine mixture comprising TEOA and diethanolamine (DEOA), by distilling off DEOA in a distillation column (DEOA column) and supplying the resulting bottom stream comprising TEOA to a downstream column (TEOA column) in which the pure TEOA is withdrawn as a side draw stream, wherein the residence time of the ethanolamine mixture in the bottom of the DEOA column is <20 minutes.
    Type: Grant
    Filed: December 10, 2009
    Date of Patent: June 18, 2013
    Assignee: BASF SE
    Inventors: Johann-Peter Melder, Gunther Van Cauwenberge, Tom Fremau, Jürgen Moors, Thilo Hahn, Bernd Stein
  • PROCESS FOR PREPARING PURE TRIETHANOLAMINE (TEOA)
    Publication number: 20110257437
    Abstract: A process for preparing pure triethanolamine (TEOA) by continuously distillatively separating an ethanolamine mixture comprising TEOA and diethanolamine (DEOA), by distilling off DEOA in a distillation column (DEOA column) and supplying the resulting bottom stream comprising TEOA to a downstream column (TEOA column) in which the pure TEOA is withdrawn as a side draw stream, wherein the residence time of the ethanolamine mixture in the bottom of the DEOA column is <20 minutes.
    Type: Application
    Filed: December 10, 2009
    Publication date: October 20, 2011
    Applicant: BASF SE
    Inventors: Johann-Peter Melder, Gunther Van Cauwenberge, Tom Fremau, Jürgen Moors, Thilo Hahn, Bernd Stein
  • Process for preparing pure triethanolamine (TEOA)
    Patent number: RE45240
    Abstract: A process for preparing pure triethanolamine (TEOA) by continuously distillatively separating an ethanolamine mixture comprising TEOA and diethanolamine (DEOA), by distilling off DEOA in a distillation column (DEOA column) and supplying the resulting bottom stream comprising TEOA to a downstream column (TEOA column) in which the pure TEOA is withdrawn as a side draw stream, wherein the residence time of the ethanolamine mixture in the bottom of the DEOA column is <20 minutes.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: November 11, 2014
    Assignee: BASF SE
    Inventors: Johann-Peter Melder, Gunther Van Cauwenberge, Tom Fremau, Jürgen Moors, Thilo Hahn, Bernd Stein