Patents by Inventor John E. Hartgerink

John E. Hartgerink 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).

  • Regeneration of acetylene converter catalysts by hydrogen stripping
    Patent number: 5332705
    Abstract: An improved method for regenerating acetylene hydrogenation catalysts which does not require an oxygenation step is provided. The method may be used to regenerate any acetylene hydrogenation catalyst; however, the method is particularly advantageous when used with a palladium based catalyst which has been used to remove acetylenic contaminants from ethylene.
    Type: Grant
    Filed: June 19, 1992
    Date of Patent: July 26, 1994
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Yao-Jyh Huang, Chong F. Shun, Lawrence G. Daniel, Edgar L. Mohundro, John E. Hartgerink