Patents by Inventor Kumi Kawano

Kumi Kawano 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).

  • Recording method for an optical recording medium
    Patent number: 5532032
    Abstract: An optical recording medium has a substrate and a recording film, which containes coloring matter, provided on the substrate. The recording film is irradiated with a laser beam passing through the substrate so that substances of the coloring matter are aggregated with each other.
    Type: Grant
    Filed: January 19, 1994
    Date of Patent: July 2, 1996
    Assignee: Pioneer Electronic Corporation
    Inventors: Kumi Kawano, Fumio Matsui
  • Reflectance control method and optical recording medium having controlled reflectance
    Patent number: 5439778
    Abstract: A reflectance of an optical recording medium provided with a light transmission substrate on which a recording film containing a dye material is formed is controlled or regulated by providing a recording film which is formed by a method comprising the steps of preparing a solution containing only a non-aggregated portion of a dye material and a solution containing only an aggregated portion of a dye material, mixing both the solutions with a predetermined mixing ratio to prepare a mixture solution and coating the mixture solution on a surface of a light transmission substrate to form a recording film of an optical recording medium having a predetermined reflectance by changing the mixing ratio. The aggregated portion of the dye material is a metal phthalocyanine aggregated material represented.
    Type: Grant
    Filed: May 12, 1994
    Date of Patent: August 8, 1995
    Assignee: Pioneer Electronic Corporation
    Inventors: Fumio Matsui, Kumi Kawano