Patents by Inventor Edward E. Hopper

Edward E. Hopper 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).

  • Butadiene production and purification
    Patent number: 4054613
    Abstract: Butadiene is produced in relatively pure form by an oxidative dehydrogenation process in which a crude butadiene stream comprising butadiene, butylenes, vinyl acetylene and propylene is first extractively distilled with an extractant consisting of a sulfolane/acetone mixture. From a purified stream consisting essentially of butadiene and vinyl acetylene, the vinyl acetylene in a second extractive distillation step is removed using a sulfolane/acetone mixture as the extractant to produce a pure butadiene stream.
    Type: Grant
    Filed: October 20, 1975
    Date of Patent: October 18, 1977
    Assignee: Phillips Petroleum Company
    Inventors: Donald M. Haskell, Edward E. Hopper, Bradley L. Munro