Patents by Inventor Fumiyoshi Kato

Fumiyoshi Kato 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).

  • Method for treating ammonia-containing gases
    Patent number: 4003978
    Abstract: A method for treating ammonia-containing gases for removing ammonia therefrom, which comprises contacting the ammonia-containing gases with a metal oxide catalyst having the following formula:Cr.sub.x A.sub.y O.sub.zwherein Cr is chromium; A is at least one element selected from the group consisting of tin, antimony, vanadium, cobalt, silver, zinc, nickel, titanium, molybdenum, tungsten, sulfur, phosphorus, boron, germanium and zirconium; x is a numeral of 4 to 12; y is a numeral of 0.2 to 8 and z is a numeral of 6.2 to 42, in a vapor phase at a temperature of from 200.degree. to 500.degree. C in the presence of molecular oxygen, and thereby the ammonia is oxidized to harmless nitrogen gas.
    Type: Grant
    Filed: October 18, 1974
    Date of Patent: January 18, 1977
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tatsuo Shiraishi, Shinkichi Shimizu, Hiroshi Ichihashi, Tadashi Shindo, Fumiyoshi Kato