Patents by Inventor Kin H. Tsu

Kin H. Tsu 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).

  • 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
  • Processing of acrylamide solutions; concentration without polymer formation
    Patent number: 4163755
    Abstract: Use of copper ion in acrylamide solution during concentration to inhibit polymerization.
    Type: Grant
    Filed: January 13, 1977
    Date of Patent: August 7, 1979
    Assignee: American Cyanamid Company
    Inventors: Ken Matsuda, Martin S. Butensky, Kin H. Tsu, Robert J. Munch