Patents by Inventor Jun Kitagawa

Jun Kitagawa 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).

  • Heat resistant composition and method of producing the same
    Patent number: 4771028
    Abstract: Excellent heat resistant compositions suitable for catalyst carries or catalysts are provided, which retain specific surface area thereof at high temperatures of not less than about 1200.degree. C. far better than conventional most superior .gamma.-alumina.
    Type: Grant
    Filed: August 11, 1986
    Date of Patent: September 13, 1988
    Assignee: Catalysts and Chemicals Inc.
    Inventors: Hiromichi Arai, Jun Kitagawa
  • Ceramic honeycomb body
    Patent number: 4740408
    Abstract: A ceramic honeycomb body has a plurality of through holes defined by partition walls so as to be separated from each other, and fins are integrally formed with selected partition walls so as to extend into the through holes surrounded by such selected partition walls, whereby the cross-sectional area of the through hole is selectively reduced by the fins thus provided.
    Type: Grant
    Filed: December 2, 1985
    Date of Patent: April 26, 1988
    Assignee: NGK Insulators, Ltd.
    Inventors: Shigeru Mochida, Masaru Kojima, Jun Kitagawa, Koichi Ikeshima
  • Ceramic honeycomb catalytic converters having high thermal shock resistance
    Patent number: 4556543
    Abstract: A heat resistant and thermal shock resistant ceramic honeycomb catalytic converter for purifying automotive exhaust gas and the like is constructed by arranging at least one ceramic honeycomb structural body, having a dimension of0.10.ltoreq.L/D.ltoreq.0.40wherein L and D are respectively a length and a diameter of the ceramic honeycomb structural body, upstream of and adjacent to another ceramic honeycomb structural body in a metal casing.
    Type: Grant
    Filed: July 27, 1983
    Date of Patent: December 3, 1985
    Assignee: NGK Insulators, Ltd.
    Inventors: Shigeru Mochida, Masaru Kojima, Jun Kitagawa