Patents by Inventor Hirozumi Izawa

Hirozumi Izawa 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 for the synthesis of mixed metal oxide powders
    Patent number: 5788950
    Abstract: A technique to synthesize complex oxide ceramic powders which offers advantages of both the coprecipitation and sol-gel routes while doing away with the disadvantages is disclosed. Namely, the ability to achieve chemical homogeneity and crystallite size on the namometer length scale at a nonprohibitive cost is provided by the disclosed method.
    Type: Grant
    Filed: August 3, 1994
    Date of Patent: August 4, 1998
    Assignee: Showa Denko K.K.
    Inventors: Kunio Imamura, John F. DiGregorio, Douglas M. Smith, Hirozumi Izawa, Tetsuhiko Yamaguchi
  • Method for the synthesis of mixed metal oxide powders
    Patent number: 5744118
    Abstract: A technique to synthesize complex oxide ceramic powders which offers advantages of both the coprecipitation and sol-gel routes while doing away with the disadvantages is disclosed. Namely, the ability to achieve chemical homogeneity and crystallite size on the namometer length scale at a nonprohibitive cost is provided by the disclosed method.
    Type: Grant
    Filed: March 28, 1995
    Date of Patent: April 28, 1998
    Assignee: Showa Denko K.K.
    Inventors: Kunio Imamura, John F. DiGregorio, Douglas M. Smith, Hirozumi Izawa, Tetsuhiko Yamaguchi
  • Transparent conductive film
    Patent number: 5045235
    Abstract: A transparent conductive film comprises, as the main component, indium oxide (In.sub.2 O.sub.3), and 6 to 20 mol % of zirconium oxide (ZrO.sub.2). The film has a light transmittance of 90% or more and an electric resistivity of less than the 2.times.10.sup.-4 .OMEGA.. cm of a conventional ITO film.
    Type: Grant
    Filed: May 24, 1990
    Date of Patent: September 3, 1991
    Assignee: Showa Denko K.K.
    Inventors: Nobuhiko Ohara, Hirozumi Izawa