Patents by Inventor Akio Kubota

Akio Kubota 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).

  • Patent number: 11291951
    Abstract: An exhaust gas purifying catalyst for 2-stroke general-purpose engines, which is characterized in that: the exhaust gas purifying catalyst includes a base and a coat layer on the base; the coat layer contains noble metals and metal oxides; the noble metals include palladium and one or more elements selected from among platinum and rhodium; the zirconia content in the coat layer is 0.07 mole or less per 100 g of the metal oxides contained in the coat layer; and the total content of one or more metal oxides selected from among lanthana and alkaline earth metal oxides in the coat layer is 0.05 mole or more per 100 g of the metal oxides contained in the coat layer.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: April 5, 2022
    Assignee: CATALER CORPORATION
    Inventors: Yoritsugu Shino, Tsuyoshi Ito, Keisuke Murashige, Akio Kubota
  • Publication number: 20220080354
    Abstract: A perforated metallic base material for purging exhaust is obtained by laminating a wavy foil having pores and a flat foil having pores and forming the same into a cylindrical shape, wherein the wavy foil and/or the flat foil has axially perforated portions having pores throughout the axial direction of the cylindrical shape and axially non-perforated portions not having pores overall in the axial direction of the cylindrical form.
    Type: Application
    Filed: February 5, 2020
    Publication date: March 17, 2022
    Applicant: CATALER CORPORATION
    Inventors: Naoki YOKOYAMA, Akio KUBOTA, Nobuaki BANDO, Chihiro KASUYA
  • Patent number: 11135577
    Abstract: The invention provides: an exhaust-gas-purifying metal substrate capable of achieving both low pressure loss and high purification performance; and an exhaust gas purification device using the metal substrate. The invention relates to an exhaust-gas-purifying perforated metal substrate in which a corrugated foil and a flat foil are layered and made into a cylindrical shape, wherein: the perforated metal substrate includes from 50/in2 to 800/in2 of cells; the corrugated foil includes a plurality of first holes having an area that is from 2.0 to 50 times the average opening area of the cells; the flat foil includes a plurality of second holes having an area that is from 3.0 to 100 times the average opening area of the cells; and the average value of the area of the first holes in the corrugated foil is smaller than the average value of the area of the second holes in the flat foil.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: October 5, 2021
    Assignee: CATALER CORPORATION
    Inventors: Yuki Fujimura, Akio Kubota, Naoki Yokoyama, Junichi Hori
  • Publication number: 20200230586
    Abstract: The invention provides: an exhaust-gas-purifying metal substrate capable of achieving both low pressure loss and high purification performance; and an exhaust gas purification device using the metal substrate. The invention relates to an exhaust-gas-purifying perforated metal substrate in which a corrugated foil and a flat foil are layered and made into a cylindrical shape, wherein: the perforated metal substrate includes from 50/in2 to 800/in2 of cells; the corrugated foil includes a plurality of first holes having an area that is from 2.0 to 50 times the average opening area of the cells; the flat foil includes a plurality of second holes having an area that is from 3.0 to 100 times the average opening area of the cells; and the average value of the area of the first holes in the corrugated foil is smaller than the average value of the area of the second holes in the flat foil.
    Type: Application
    Filed: June 22, 2018
    Publication date: July 23, 2020
    Applicant: CATALER CORPORATION
    Inventors: Yuki FUJIMURA, Akio KUBOTA, Naoki YOKOYAMA, Junichi HORI
  • Publication number: 20190209967
    Abstract: An exhaust gas purifying catalyst for 2-stroke general-purpose engines, which is characterized in that: the exhaust gas purifying catalyst includes a base and a coat layer on the base; the coat layer contains noble metals and metal oxides; the noble metals include palladium and one or more elements selected from among platinum and rhodium; the zirconia content in the coat layer is 0.07 mole or less per 100 g of the metal oxides contained in the coat layer; and the total content of one or more metal oxides selected from among lanthana and alkaline earth metal oxides in the coat layer is 0.05 mole or more per 100 g of the metal oxides contained in the coat layer.
    Type: Application
    Filed: May 17, 2017
    Publication date: July 11, 2019
    Applicant: CATALER CORPORATION
    Inventors: Yoritsugu SHINO, Tsuyoshi ITO, Keisuke MURASHIGE, Akio KUBOTA
  • Patent number: 5377330
    Abstract: A document editing apparatus in which image data such as data representing an illustration is converted to total digital image data pertaining to a complete image. The total digital image data is divided into a predetermined number of pieces that each include a predetermined number of dots. The divided digital image data is stored in memory as external character data. The total digital image data is converted into a divided digital character data assembly and registered as a digital character data block in memory. Next, character data representing document data is inputted into the memory. The digital character data block and the character data exist together in memory as coexisting editing data. Since the digital image data exists together with the character data in memory, editing processing of document data including the character data and the digital image data can be carried out at one time during operation processing.
    Type: Grant
    Filed: March 4, 1991
    Date of Patent: December 27, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Akio Kubota, Shigeru Matsuoka, Hitoshi Yonenaga