Patents by Inventor Jacques Leonard

Jacques Leonard 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).

  • Process for purifying a C.sub.4 and/or C.sub.5 hydrocarbon cut containing water and dimethyl ether as impurities
    Patent number: 4474647
    Abstract: A C.sub.4 and/or C.sub.5 olefinic hydrocarbon cut, containing dimethyl ether and water as impurities, in a relative proportion of dimethyl ether to water of at most 5:1, is purified in a distillation zone where it is introduced at an intermediate level, distant from the top or from the bottom thereof by at least 3 theoretical plates, optionally with a stripping gas, and separated into a overhead fraction comprising an aqueous liquid phase and a hydrocarbon liquid phase at least partially recycled as reflux to the upper part of the distillation zone, and a bottom fraction formed of the purified C.sub.4 and/or C.sub.5 olefinic cut.
    Type: Grant
    Filed: April 23, 1982
    Date of Patent: October 2, 1984
    Assignee: Institut Francais du Petrole
    Inventors: Lionel Asselineau, Jacques Leonard, Jean Chodorge, Jean Gaillard
  • Bottle
    Patent number: D263560
    Type: Grant
    Filed: May 24, 1979
    Date of Patent: March 30, 1982
    Inventor: Jacques Leonard