Patents by Inventor Koichi Fuji

Koichi Fuji 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).

  • Alumina fibers, alumina fiber aggregate, and retaining material for use in exhaust gas purification device
    Patent number: 11345641
    Abstract: The present invention relates to an alumina fiber having the content of sodium oxide of 530 to 3,200 ppm and a mass ratio (A/B) of the content (A) of the sodium oxide to the content (B) of calcium oxide of 5 to 116.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: May 31, 2022
    Assignee: Denka Company Limited
    Inventors: Teruhiro Aikyo, Yasutaka Oshima, Hiroyuki Ohashi, Koichi Fuji, Yosuke Goto
  • ALUMINA FIBERS, ALUMINA FIBER AGGREGATE, AND RETAINING MATERIAL FOR USE IN EXHAUST GAS PURIFICATION DEVICE
    Publication number: 20210094883
    Abstract: The present invention relates to an alumina fiber having the content of sodium oxide of 530 to 3,200 ppm and a mass ratio (A/B) of the content (A) of the sodium oxide to the content (B) of calcium oxide of 5 to 116.
    Type: Application
    Filed: October 19, 2018
    Publication date: April 1, 2021
    Applicant: Denka Company Limited
    Inventors: Teruhiro AIKYO, Yasutaka OSHIMA, Hiroyuki OHASHI, Koichi FUJI, Yosuke GOTO
  • Inorganic staple fiber accumulation for holding material, process for producing the same and holding material
    Patent number: 7182999
    Abstract: An aggregate with small fiber deterioration even after being held under compression under heating at about 1,000° C. for a long term, and a holding material of e.g. a catalyst carrier of a catalyst converter or a honeycomb body of DPE employing it, are provided. An inorganic short fiber aggregate for a holding material, which is an aggregate of inorganic short fibers having a chemical composition of from 74 to 86 mass % of an alumina component and from 26 to 14 mass % of a silica component and having a mineral composition of from 15 to 60 mass % of mullite, wherein the average fiber diameter of the aggregate is from 2 to 8 ?m, at least 99% (including 100%) of the number of the inorganic short fibers consists of fibers having fiber diameters of from 1.5 to 15 ?m, and the specific surface area is at most 10 m2/g.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: February 27, 2007
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hiroyuki Ohashi, Tomoo Saito, Koichi Fuji
  • Inorganic staple fiber accumulation for holding material, process for producing the same and holding material
    Publication number: 20050227058
    Abstract: An aggregate with small fiber deterioration even after being held under compression under heating at about 1,000° C. for a long term, and a holding material of e.g. a catalyst carrier of a catalyst converter or a honeycomb body of DPE employing it, are provided. An inorganic short fiber aggregate for a holding material, which is an aggregate of inorganic short fibers having a chemical composition of from 74 to 86 mass % of an alumina component and from 26 to 14 mass % of a silica component and having a mineral composition of from 15 to 60 mass % of mullite, wherein the average fiber diameter of the aggregate is from 2 to 8 ?m, at least 99% (including 100%) of the number of the inorganic short fibers consists of fibers having fiber diameters of from 1.5 to 15 ?m, and the specific surface area is at most 10 m2/g.
    Type: Application
    Filed: June 26, 2003
    Publication date: October 13, 2005
    Applicant: DENKI KAGAKU KOGYO KABUSHYIKI KAISHA
    Inventors: Hiroyuki Ohashi, Tomoo Saito, Koichi Fuji