Patents Examined by Samuel S. Silverman
  • Catalyst process of making
    Patent number: 6762148
    Abstract: An object of the present invention is to provide a catalyst that is highly active and has a large mechanical strength. The catalyst of the present invention contains molybdenum, vanadium, copper and antimony as the essential components, being produced by using antimony acetate for an antimony source material and preferably used for producing acrylic acid by vapor-phase catalytic oxidation of acrolein.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: July 13, 2004
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Junzo Ohishi, Masahiro Senyo, Yoshimasa Seo, Hideki Sugi