Patents by Inventor Alistair S. Couper

Alistair S. Couper 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).

  • Purification of olefin recycle to polymerization
    Patent number: 4235983
    Abstract: Disclosed is a process for the polymerization of olefins wherein olefinic compounds are separated from mixtures containing them with resulting improved utilization of olefinic compounds. Such olefinic compounds are separated by use of membrane separation units and can be recycled to a polymerization zone.
    Type: Grant
    Filed: October 4, 1978
    Date of Patent: November 25, 1980
    Assignee: Standard Oil Company (Indiana)
    Inventors: Edward F. Steigelmann, Robert L. Yahnke, Alistair S. Couper, Chand Deepak