Patents by Inventor Clinton R. Parham

Clinton R. Parham 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).

  • Isomerization of vinylidene olefins
    Patent number: 6639118
    Abstract: Process technology for selectively isomerizing vinylidene olefin to tri-substituted olefin is described. The vinylidene olefin, normally in admixture with other types of olefins, especially linear 1-olefins, is treated with anhydrous hydrogen bromide under anhydrous conditions and in the absence of molecular oxygen and free radical initiator. The contacting period, which can be a matter of minutes, is sufficient to selectively isomerize the vinylidene olefin to tri-substituted olefin. If the process is conducted properly, little if any hydrobromination occurs.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: October 28, 2003
    Inventors: Bonnie G. McKinnie, J. Todd Aplin, Robert U. Lyons, Clinton R. Parham