Patents by Inventor Hidekuni Hayashi

Hidekuni Hayashi 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).

  • Zirconia-containing inorganic fiber and process for the production thereof
    Patent number: 6881693
    Abstract: There are provided a high-strength zirconia-containing inorganic fiber having excellent alkali resistance, oxidation resistance, catalyst function and/or catalyst-carrying function and a process for the production thereof. The zirconia-containing inorganic fiber is a fiber which is formed of a composite oxide phase comprising a first phase mainly formed of a silica component or silicon carbide and a second phase formed of zirconia, and it is characterized in that the ratio of Zr slopingly increases toward the surface layer of the fiber.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: April 19, 2005
    Assignee: Ube Industries, Ltd.
    Inventors: Hiroyuki Yamaoka, Yoshikatsu Harada, Hidekuni Hayashi
  • Silica-group composite oxide fiber and process for the production thereof
    Patent number: 6541416
    Abstract: A silica-group composite oxide fiber formed of a composite oxide phase of an oxide phase (first phase) mainly made of a silica component and a metal oxide phase (second phase) excluding silica, in which the existent ratio of at least one metal element of a metal oxide constituting the second phase upward slopingly increases toward the surface layer of the fiber and a process for the production thereof.
    Type: Grant
    Filed: June 6, 2001
    Date of Patent: April 1, 2003
    Assignee: Ube Industries, Ltd.
    Inventors: Toshihiro Ishikawa, Yoshikatu Harada, Hidekuni Hayashi, Shinji Kajii
  • Silica-group composite oxide fiber and process for the production thereof
    Publication number: 20020001702
    Abstract: A silica-group composite oxide fiber formed of a composite oxide phase of an oxide phase (first phase) mainly made of a silica component and a metal oxide phase (second phase) excluding silica, in which the existent ratio of at least one metal element of a metal oxide constituting the second phase upward slopingly increases toward the surface layer of the fiber and a process for the production thereof.
    Type: Application
    Filed: June 6, 2001
    Publication date: January 3, 2002
    Inventors: Toshihiro Ishikawa, Yoshikatu Harada, Hidekuni Hayashi, Shinji Kajii