Patents by Inventor Tsutoma Shikada

Tsutoma Shikada 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).

  • Catalyzer for decomposing ammonia
    Patent number: 5002921
    Abstract: For carrying out a process for decomposing, into hydrogen and nitrogen, ammonia recovered from a coke oven gas by combining a catalytic combustion of ammonia and a catalytic decomposition of ammonia utilizing a waste heat by said combustion, a basic compound as a required catalyzer is added to ruthenium supported on alumina, or ruthenium as a required catalyzer is supported on a basic compound, whereby ammonia may be decomposed effectively at ranges of low temperatures as not more than 500.degree. C.
    Type: Grant
    Filed: June 29, 1990
    Date of Patent: March 26, 1991
    Assignee: NKK Corporation
    Inventors: Tsutoma Shikada, Asanuma Minoru, Takao Ikariya