Patents by Inventor Yoshihiro Shimada

Yoshihiro Shimada 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 and apparatus for supervising combustion state
    Patent number: 4620491
    Abstract: This invention relates to the supervision of a combustion state of a combustion furnace. A flame formed concentrically with the direction of a fuel jetted from a burner being the center is measured from its side, and two oxidizing flame zones as high luminance zones are extracted. Using the shape parameters of the flame, an index for reducing NOx and unburnt components in ash are calculated and estimated so as to supervise the combustion state. The positions or centroids of the flames and the distance between the centroids are used as the shape parameters, and the flame shape is divided into two zones for easy display of each zone.
    Type: Grant
    Filed: April 23, 1985
    Date of Patent: November 4, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Mitsuyo Nishikawa, Nobuo Kurihara, Yoshio Sato, Atsumi Watanabe, Toshihiko Higashi, Hisanori Miyagaki, Atsushi Yokogawa, Yoshihiro Shimada