Patents by Inventor Yoshito Umeda

Yoshito Umeda 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).

  • CARBON DIOXIDE RECOVERY DEVICE
    Publication number: 20230149852
    Abstract: A carbon dioxide recovery device provided with a separation device that separates carbon dioxide from to-be-separated gas (for example, combustion exhaust gas) containing carbon dioxide, wherein: in order from the upstream side where the to-be-separated gas is supplied, the separation device and carbon dioxide sublimators, which sublimate (solidify) carbon dioxide that was separated in the separation device, are connected in series, refrigerant circuits in which a fluid having cold heat serves as the refrigerant, are connected to the carbon dioxide sublimators, and the refrigerant is used to sublimate (solidify) the carbon dioxide; and when the carbon dioxide is sublimated (solidified), the carbon dioxide sublimators are depressurized and set to negative pressure so as to draw in the carbon dioxide separated at the separation device.
    Type: Application
    Filed: April 26, 2021
    Publication date: May 18, 2023
    Applicants: TOHO GAS CO., LTD., NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM
    Inventors: Yoshito UMEDA, Hiroshi MACHIDA, Koyo NORINAGA, Hiroshi YAMASHITA, Tsuyoshi YAMAGUCHI
  • Process and apparatus for the pyrolysis of hydrocarbon gas
    Patent number: 6921517
    Abstract: A hydrocarbon gas to be decomposed, optionally mixed with water vapor, is allowed to flow through the gap between various porous tubes 4 constituting a group of porous tubes provided extending vertically in a decomposition reaction column 1 while air or oxygen is jetted homogeneously from the interior to the exterior of the porous tubes in the direction perpendicular to the stream of the hydrocarbon gas to be decomposed, optionally mixed with water vapor. The mixture is then ignited to form a diffusion flame layer B on the outer surface of the porous tubes 4. With the diffusion flame layer as a heat source, the hydrocarbon gas to be decomposed, optionally mixed with water vapor, undergoes pyrolysis.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: July 26, 2005
    Assignees: The Japan Steel Works, Ltd., Kubota Corporation
    Inventors: Shuzo Matsumura, Masaji Yoneta, Rokuro Denda, Yoshito Umeda, Masao Hattori, Satoshi Hagi, Jun Funakoshi, Akira Kosaka
  • Process and apparatus for the pyrolysis of hydrocarbon gas
    Publication number: 20020039548
    Abstract: A hydrocarbon gas to be decomposed, optionally mixed with water vapor, is allowed to flow through the gap between various porous tubes 4 constituting a group of porous tubes provided extending vertically in a decomposition reaction column 1 while air or oxygen is jetted homogeneously from the interior to the exterior of the porous tubes in the direction perpendicular to the stream of the hydrocarbon gas to be decomposed, optionally mixed with water vapor. The mixture is then ignited to form a diffusion flame layer B on the outer surface of the porous tubes 4. With the diffusion flame layer as a heat source, the hydrocarbon gas to be decomposed, optionally mixed with water vapor, undergoes pyrolysis.
    Type: Application
    Filed: December 11, 2001
    Publication date: April 4, 2002
    Applicant: SHUZO MATSUMURA, THE JAPAN STEEL WORKS, LTD.
    Inventors: Shuzo Matsumura, Masaji Yoneta, Rokuro Denda, Yoshito Umeda, Masao Hattori, Satoshi Hagi, Jun Funakoshi, Akira Kosaka