Patents by Inventor John A. Fetchin

John A. Fetchin 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).

  • Preparation of CoMo and NiMo catalyst using cobalt or nickel complexes that are stable in basic solution
    Patent number: 4409131
    Abstract: For preparing supported catalysts containing cobalt or nickel and molybdenum, using single solution impregnation, stable solutions of cobalt or nickel complexed with carboxylic acids are compatible with ammonium molybdate and result is superior catalysts.
    Type: Grant
    Filed: February 22, 1982
    Date of Patent: October 11, 1983
    Assignee: Maine
    Inventor: John A. Fetchin
  • Catalyst for hydration of nitriles
    Patent number: 4178310
    Abstract: Solid catalyst of reduced copper magnesium silicate type is improved for its use in catalytic hydration of acrylonitrile to make acrylamide by calcining the catalyst prior to such use. Calcining strengthens the catalyst particles for longer catalyst life in the reactor and slows the rate of decay of catalytic activity so the average productivity over the life of the catalyst is improved.
    Type: Grant
    Filed: August 30, 1976
    Date of Patent: December 11, 1979
    Assignee: American Cyanamid Company
    Inventors: John A. Fetchin, Kin H. Tsu
  • Catalyst preparation method
    Patent number: 4163735
    Abstract: Copper-magnesium silicate-carbonate catalysts of improved activity and catalyst life for use in continuous hydration of acrylonitrile to acrylamide are prepared by a novel method in which magnesium and copper are precipitated separately in a common mother liquor and the precipitate is separated and dried at 170.degree.-200.degree. C. before pelleting. Pellets made from the dried powder, when reduced and calcined for use in the hydration reaction have better combination of catalytic properties than prior art catalysts of the type.
    Type: Grant
    Filed: July 25, 1977
    Date of Patent: August 7, 1979
    Assignee: American Cyanamid Company
    Inventors: John A. Fetchin, William F. Marzluff