Patents by Inventor Yoshiyuki Yoshikawa

Yoshiyuki Yoshikawa 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).

  • Catalyst and method for denitrization of nitrogen oxides
    Patent number: 5582809
    Abstract: A catalyst for reducing nitrogen oxides into nitrogen and water in the presence of a reducing agent, which comprises:(a) titanium;(b) at least one element selected from the group consisting of tungsten and molybdenum in a total amount of 10-25% by weight in terms of oxides; and(c) niobium in an amount of 0.1-2% by weight in terms of oxides.
    Type: Grant
    Filed: July 19, 1994
    Date of Patent: December 10, 1996
    Assignees: Sakai Chemical Industry Co., Ltd., Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Hiroaki Rikimaru, Toshikatsu Umaba, Yoshiyuki Yoshikawa