Patents by Inventor Kyoji Ohdan

Kyoji Ohdan 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).

  • Catalytic ammoxidation of olefins to nitriles
    Patent number: 4009194
    Abstract: Propylene or isobutylene is catalytically oxidized into the corresponding nitrile with improved conversions and yields. The catalyst consists essentially of the metals; (A) Mo, (B) Bi, (C) Co, (D) Fe and (E) Zr in the predetermined atomic ratios.
    Type: Grant
    Filed: April 22, 1975
    Date of Patent: February 22, 1977
    Assignee: UBE Industries, Ltd.
    Inventors: Sumio Umemura, Kyoji Ohdan, Tokuo Matsuzaki, Yasuo Nakamura, Masao Sawazi
  • Vapor phase oxidation of unsaturated aliphatic hydrocarbon to maleic anhydride using a catalyst consisting essentially of the oxides of vanadium, phosphorous, zirconium, and manganese
    Patent number: 4006167
    Abstract: Unsaturated hydrocarbons having 4 to 6 carbon atoms are catalytically oxidized into maleic anhydride at relatively low temperatures in the range of 300.degree. C to 450.degree. C. The catalyst used consists essentially of oxides of vanadium, phosphorus, zirconium, and at least one element selected from manganese, boron, cadmium, silver, bismuth and zinc.
    Type: Grant
    Filed: June 23, 1975
    Date of Patent: February 1, 1977
    Assignee: UBE Industries, Ltd.
    Inventors: Sumio Umemura, Kyoji Ohdan, Fumihiko Sakai, Yasuo Bando, Harumi Ikezawa