Patents by Inventor Tetsuo Ai

Tetsuo Ai 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).

  • Input control method and means for nitrogen oxide removal
    Patent number: 4302205
    Abstract: Nitrogen oxide contained in the flue-gas from a heating unit is removed in a nitrogen oxide removal unit by injection of nitrogen oxide removing agent in an amount determined by the amount of the nitrogen oxide contained in the flue-gas. Such amount of nitrogen oxide contained in the flue-gas is detected, on the one hand, by the estimation obtained through calculation using factors such as rate of supply of fuel to the heating unit and concentration of oxygen in the flue-gas, and on the other hand, by direct measurement, for a fail-safe system.
    Type: Grant
    Filed: March 7, 1980
    Date of Patent: November 24, 1981
    Assignees: Kurashiki Boseki Kabushiki Kaisha, Tokyo Shibaura Electric Co., Ltd.
    Inventors: Ryoji Muraki, Shinichiro Takemura, Tetsuo Ai, Takaaki Kawasaki