Patents by Inventor Ralph E. Clark

Ralph E. Clark 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).

  • Air chiller/drier
    Patent number: 4287724
    Abstract: A device for cooling air to a temperature below its dew point and for separating condensed liquid from the cooled air to produce dry air is disclosed.
    Type: Grant
    Filed: December 17, 1979
    Date of Patent: September 8, 1981
    Assignee: Morehouse Industries, Inc.
    Inventor: Ralph E. Clark
  • Recovery of 1,3-butadiene
    Patent number: 4277313
    Abstract: This invention provides a process for separating 1,3-butadiene from a C.sub.4 -hydrocarbon mixture which contains C.sub.4 -alkyne components.In one embodiment, the invention involves a first step hydrogenation procedure for selectively hydrogenating the C.sub.4 -alkyne components, and a second step extractive distillation procedure for separating out a 1,3-butadiene rich selective solvent extract phase.
    Type: Grant
    Filed: March 27, 1980
    Date of Patent: July 7, 1981
    Assignee: El Paso Products Company
    Inventors: Yuv R. Mehra, Ralph E. Clark
  • Bird seed saver
    Patent number: D509326
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: September 6, 2005
    Inventor: Ralph E. Clark