Patents by Inventor Tatsuhiro HIGUCHI

Tatsuhiro HIGUCHI 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).

  • Honeycomb filter and method for manufacturing honeycomb filters
    Patent number: 11433382
    Abstract: The honeycomb filter of the present invention includes a honeycomb fired body that includes multiple cells serving as channels of exhaust gas; and porous cell partition walls defining the cells, the cells including exhaust gas introduction cells whose ends on an exhaust gas inlet side are open and whose ends on an exhaust gas outlet side are plugged, and exhaust gas emission cells whose ends on the exhaust gas outlet side are open and whose ends on the exhaust gas inlet side are plugged, wherein the honeycomb fired body contains ceria-zirconia composite oxide particles and alumina particles, when the pore size of the cell partition walls of the honeycomb fired body is measured by mercury porosimetry, and the measurement results are presented as a pore size distribution curve with pore size (?m) on the horizontal axis and log differential pore volume (mL/g) on the vertical axis, the volume of micropores having a pore size of 1 to 100 ?m accounts for 80 vol % or more of the total pore volume, and a value obtain
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: September 6, 2022
    Assignee: IBIDEN CO., LTD.
    Inventors: Toyohiro Usui, Tatsuhiro Higuchi
  • HONEYCOMB FILTER AND METHOD FOR MANUFACTURING HONEYCOMB FILTERS
    Publication number: 20200398263
    Abstract: The honeycomb filter of the present invention includes a honeycomb fired body that includes multiple cells serving as channels of exhaust gas; and porous cell partition walls defining the cells, the cells including exhaust gas introduction cells whose ends on an exhaust gas inlet side are open and whose ends on an exhaust gas outlet side are plugged, and exhaust gas emission cells whose ends on the exhaust gas outlet side are open and whose ends on the exhaust gas inlet side are plugged, wherein the honeycomb fired body contains ceria-zirconia composite oxide particles and alumina particles, when the pore size of the cell partition walls of the honeycomb fired body is measured by mercury porosimetry, and the measurement results are presented as a pore size distribution curve with pore size (?m) on the horizontal axis and log differential pore volume (mL/g) on the vertical axis, the volume of micropores having a pore size of 1 to 100 ?m accounts for 80 vol % or more of the total pore volume, and a value obtain
    Type: Application
    Filed: September 2, 2020
    Publication date: December 24, 2020
    Applicant: IBIDEN CO., LTD.
    Inventors: Toyohiro USUI, Tatsuhiro HIGUCHI