Patents by Inventor Francis Robert Frederick Hardy

Francis Robert Frederick Hardy 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).

  • Vapour phase oxidation process
    Patent number: 3948997
    Abstract: In the oxidation of .alpha., .beta.-diols to .alpha., .beta.-diones with oxygen, the use of a catalyst comprising at least one metal selected from Cu, Ag and Au and at least one element selected from Ge, Sn, Pb, N, P, As, Sb, Bi. In the oxidation of ethylene glycol to glyoxal with oxygen, condensing ethylene glycol from the products from the reactor and thereafter lowering the temperature to condense the glyoxal. A purification process for glyoxal uses a weakly basic anion exchange resin.
    Type: Grant
    Filed: March 14, 1974
    Date of Patent: April 6, 1976
    Assignee: Laporte Industries Limited
    Inventors: Brian Keith Howe, Francis Robert Frederick Hardy, Douglas Alfred Clarke