Patents by Inventor Jeffery G. Grierson

Jeffery G. Grierson 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).

  • Method and apparatus for preparing an epoxide by anionic dialysis
    Patent number: 5198117
    Abstract: A process and apparatus for making a low salt epoxide is disclosed. The process comprises feeding a halohydrin solution into one compartment of a dialysis cell separated from a hydroxide dialyzing solution in a second compartment by an anionic membrane. An effective hydroxide concentration gradient across the membrane induces hydroxyl ion exchange for excess anions from the halohydrin solution so that electroneutrality across the membrane can be maintained.
    Type: Grant
    Filed: December 2, 1991
    Date of Patent: March 30, 1993
    Assignee: The Dow Chemical Company
    Inventors: Jeffery G. Grierson, Dorothy L. Roerden