Patents Represented by Attorney Herbert C. Knudsen

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  • Process for the preparation of methacrylic acid from methacrolein
    Patent number: 4166190
    Abstract: Catalysts containing tungsten, phosphorus, vanadium, molybdenum, and promoted with at least one of the elements selected from the group selected from Sn, As, Cu, Ce, B, Cr, Fe, Ni, Co, U, Mn, Ag, Ru, Rh, Cd, Sr, In, Zn, and La have been found to be especially effective for the oxidation of unsaturated aldehydes to form the corresponding unsaturated acid.
    Type: Grant
    Filed: April 29, 1976
    Date of Patent: August 28, 1979
    Assignee: The Standard Oil Company
    Inventors: James F. White, James R. Rege, Robert K. Grasselli, Dev D. Suresh