Patents by Inventor Ahazuerus T. van Eijl

Ahazuerus T. van Eijl 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 separating an ethylenically unsaturated hydrocarbon from a hydrocarbon mixture
    Patent number: 4714793
    Abstract: An extractive distillation process for selectively separating an ethylenically unsaturated hydrocarbon from a mixture containing hydrocarbon liquids having similar boiling points wherein an amine acts as a selective solvent and polymerization inhibitor. For example, styrene can be separated from a mixture of styrene and o-xylene using aminoethyl piperazine as the solvent for the distillation.
    Type: Grant
    Filed: May 2, 1986
    Date of Patent: December 22, 1987
    Assignee: The Dow Chemical Company
    Inventor: Ahazuerus T. van Eijl
  • Process for separating an ethylenically unsaturated hydrocarbon from a hydrocarbon mixture
    Patent number: 4596655
    Abstract: An extractive distillation process for selectively separating an ethylenically unsaturated hydrocarbon from a mixture containing hydrocarbon liquids having similar boiling points wherein an amine acts as a selective solvent and polymerization inhibitor. For example, styrene can be separated from a mixture of styrene and o-xylene using aminoethyl piperazine as the solvent for the distillation.
    Type: Grant
    Filed: August 17, 1983
    Date of Patent: June 24, 1986
    Assignee: The Dow Chemical Company
    Inventor: Ahazuerus T. van Eijl