Patents by Inventor Colin J. Leppard

Colin J. Leppard 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 the removal of hydrogen from gases
    Patent number: 4459270
    Abstract: A process for the removal of hydrogen from a gas which also contains oxygen, which process comprises contacting the said gas at ambient temperature with a catalyst comprising a carrier of tin oxide and alumina impregnated with from 0.25 to 2.5% by weight of platinum and from 0.25 to 2.5% by weight of palladium.
    Type: Grant
    Filed: March 11, 1983
    Date of Patent: July 10, 1984
    Assignees: CJB Developments Limited, Universal Matthey Products Limited
    Inventors: Colin J. Leppard, Andrew Holt
  • Adsorption heat pump
    Patent number: 4183734
    Abstract: A method of transferring heat from a low temperature reservoir to a high temperature reservoir in which a two bed adsorption system is used. An adsorbable component is desorbed from a first bed of a reversible adsorbent previously saturated with the adsorbable component and the heat required is transferred to the bed from a low temperature reservoir in heat-exchange relationship with the bed of adsorbent. The adsorbable component is then adsorbed on a second bed of a reversible adsorbent and the heat released is transferred to a high temperature reservoir in heat-exchange relationship with the bed. In order for the system to operate continuously the mode of operation of the first and second bed of reversible adsorbent must be periodically reversed.
    Type: Grant
    Filed: May 30, 1978
    Date of Patent: January 15, 1980
    Assignee: CJB Developments Limited
    Inventors: Colin J. Leppard, Robert S. E. Leslie