Patents by Inventor Fujiwara Kunihisa

Fujiwara Kunihisa 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).

  • Apparatus for calcining powdered cement material
    Patent number: 4014641
    Abstract: Improvements in the apparatus for calcining powdered cement material and removing nitrogen oxides from the entire exhaust gases from the burning equipment. The apparatus comprises making the most of the sensible heat and fluidity of the cement material preheated by the burning equipment and using the material as a catalyst for diffusing and vaporizing the fuel, thereby producing reducing gases, and then bringing the reducing gases into contact with combustion gases from the kiln for stepwise combustion. The invention is also concerned with other improvements in the apparatus for carrying the method into practice.
    Type: Grant
    Filed: August 15, 1975
    Date of Patent: March 29, 1977
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Miyamoto Shigeyoshi, Yamashita Kosuke, Fujiwara Kunihisa, Utsumi Tatsuo