Patents by Inventor Masakazu Konomi

Masakazu Konomi 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).

  • Ceramic honeycomb filter
    Patent number: 8435320
    Abstract: A ceramic honeycomb filter comprising a honeycomb structure having a large number of flow paths partitioned by porous cell walls; and plugs formed in the flow paths alternately on the exhaust gas inlet and outlet sides; the thickness W (mm) and permeability ? (?m2) of the cell wall and the length L (mm) and cross section area A (mm2) perpendicular to the length direction of the flow path meeting the relations of 0.1?W?0.5, 8??/W?26.7, and 125?L/A0.5?360.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: May 7, 2013
    Assignee: Hitachi Metals, Ltd.
    Inventors: Toshitaka Ishizawa, Kenichiro Sekiguchi, Masakazu Konomi
  • Ceramic honeycomb filter and its production method
    Patent number: 8092568
    Abstract: A ceramic honeycomb filter comprising a honeycomb structure having large numbers of flow paths partitioned by porous cell walls, and plugs alternately formed in the flow paths on the exhaust-gas-inlet and outlet sides, the outlet-side plugs having porosity of 65% or less, and the upstream-side end surfaces of the outlet-side plugs having surface roughness Ra of 13-50 ?m.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: January 10, 2012
    Assignee: Hitachi Metals, Ltd.
    Inventors: Masakazu Konomi, Hirohisa Suwabe
  • CERAMIC HONEYCOMB FILTER AND ITS PRODUCTION METHOD
    Publication number: 20100058725
    Abstract: A ceramic honeycomb filter comprising a honeycomb structure having large numbers of flow paths partitioned by porous cell walls, and plugs alternately formed in the flow paths on the exhaust-gas-inlet and outlet sides, the outlet-side plugs having porosity of 65% or less, and the upstream-side end surfaces of the outlet-side plugs having surface roughness Ra of 13-50 ?m.
    Type: Application
    Filed: December 21, 2007
    Publication date: March 11, 2010
    Applicant: Hitachi Metals, Ltd.
    Inventors: Masakazu Konomi, Hirohisa Suwabe
  • CERAMIC HONEYCOMB FILTER
    Publication number: 20090025349
    Abstract: A ceramic honeycomb filter comprising a honeycomb structure having a large number of flow paths partitioned by porous cell walls; and plugs formed in the flow paths alternately on the exhaust gas inlet and outlet sides; the thickness W (mm) and permeability ? (?m2) of the cell wall and the length L (mm) and cross section area A (mm2) perpendicular to the length direction of the flow path meeting the relations of 0.1?W?0.5, 8??/W?26.7, and 125?L/A0.5?360.
    Type: Application
    Filed: August 30, 2007
    Publication date: January 29, 2009
    Applicant: HITACHI METALS, LTD.
    Inventors: Toshitaka Ishizawa, Kenichiro Sekiguchi, Masakazu Konomi