Patents by Inventor Shigeo Kanayama

Shigeo Kanayama 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).

  • Processing method for high pressure gas container and halogen containing gas filled in said container
    Patent number: 7021487
    Abstract: A metal container to be filled with a halogen containing gas, with the inner surface processed with a polishing agent. The gas has a reduced purity decline by the increase of the water content or impurities from the inner surface of the container which is absorbed by the gas over the passage of time. The inner surface processing method is improved such that the value of dividing the area of the Si2s peak by the area of the Fe2p3/2 peak in the X-ray photoelectron spectrum of the gas container inner surface with the inner surface process with a polishing agent applied is 0.3 or less.
    Type: Grant
    Filed: August 5, 2003
    Date of Patent: April 4, 2006
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Akio Kikkawa, Shigeo Kanayama, Isao Harada
  • Processing method for high pressure gas container and halogen containing gas filled in said container
    Publication number: 20040026417
    Abstract: A metal container to be filled with a halogen containing gas, with the inner surface processed with a polishing agent. The gas has a reduced purity decline by the increase of the water content or impurities from the inner surface of the container which is absorbed by the gas over the passage of time. The inner surface processing method is improved such that the value of dividing the area of the Si2s peak by the area of the Fe2p3/2 peak in the X-ray photoelectron spectrum of the gas container inner surface with the inner surface process with a polishing agent applied is 0.3 or less.
    Type: Application
    Filed: August 5, 2003
    Publication date: February 12, 2004
    Applicant: Mitsui Chemicals, Inc.
    Inventors: Akio Kikkawa, Shigeo Kanayama, Isao Harada