Patents by Inventor Masaomi Uchiyama

Masaomi Uchiyama 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).

  • Method of cleaning oxidation oven and method of producing oxidized fiber, carbon fiber, and graphitized fiber
    Patent number: 10612164
    Abstract: A method of cleaning an oxidation oven that subjects a polyacrylonitrile-based precursor fiber for carbon fiber to an oxidation treatment in an oxidizing atmosphere, wherein the oxidation oven has a mechanism for circulating an oxidizing gas internally, the method including the steps of: causing a liquid to come in contact with dust adhering to a wall surface of the oxidation oven so that pressure in a direction perpendicular to the wall surface is 2 MPa or more; discharging the liquid out of the oxidation oven to discharge dust peeled off from the wall surface out of the oxidation oven; and circulating an oxidizing gas having a temperature of 40° C. or higher in the oxidation oven.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: April 7, 2020
    Assignee: Toray Industries, Inc.
    Inventors: Yusuke Kuji, Wataru Yamamoto, Masaomi Uchiyama
  • METHOD OF CLEANING OXIDATION OVEN AND METHOD OF PRODUCING OXIDIZED FIBER, CARBON FIBER, AND GRAPHITIZED FIBER
    Publication number: 20200071856
    Abstract: A method of cleaning an oxidation oven that subjects a polyacrylonitrile-based precursor fiber for carbon fiber to an oxidation treatment in an oxidizing atmosphere, wherein the oxidation oven has a mechanism for circulating an oxidizing gas internally, the method including the steps of: causing a liquid to come in contact with dust adhering to a wall surface of the oxidation oven so that pressure in a direction perpendicular to the wall surface is 2 MPa or more; discharging the liquid out of the oxidation oven to discharge dust peeled off from the wall surface out of the oxidation oven; and circulating an oxidizing gas having a temperature of 40° C. or higher in the oxidation oven.
    Type: Application
    Filed: January 29, 2018
    Publication date: March 5, 2020
    Inventors: Yusuke Kuji, Wataru Yamamoto, Masaomi Uchiyama