Patents by Inventor Petra E. Vanderstraeten

Petra E. Vanderstraeten 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).

  • Separation of N,N,N?-trimethylbisamino-ethylether from mixtures comprising tertiary amines or tertiary aminoalkylethers
    Patent number: 8232223
    Abstract: The present invention relates to a method for recovering N,N,N?-trimethylbisaminoethylether from a mixture with its amide and a method for separating N,N,N?-trimethylbisaminoethylether from mixtures comprising tertiary amines or tertiary aminoalkylether as well as a composition comprising a mixture of N,N,N?-trimethylbisaminoethylether and a transamidation agent.
    Type: Grant
    Filed: May 1, 2008
    Date of Patent: July 31, 2012
    Assignees: Huntsman International LLC, Huntsman Corporation Hungary ZRT
    Inventors: Imre Kordas, Heiko H. Humbert, Gabor Felber, Attila Gaspar, Robert A. Grigsby, Jr., Petra E. Vanderstraeten