Patents by Inventor Hatsue Koishikawa

Hatsue Koishikawa 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).

  • Fine particle dispersion composition, optical component, optical film laminate, polarization splitting device, and method for manufacturing the optical component
    Patent number: 7348056
    Abstract: The invention provides a fine particle dispersion composition that does not depend on a curing method and that has adaptability to the curing methods and versatility and can provide a highly transparent optical component, an optical component using the fine particle dispersion composition and a method of manufacturing the same, and an optical film laminate using the optical component, and also provides a polarization splitting device using the optical component. In order to achieve the above, there is provided an optical component, which is obtained by curing a fine particle dispersion composition, which comprises metal-oxide fine particles, an organic resin material adapted to cure by absorbing energy, one of a polyoxyethylene alkyl ether phosphoric acid-based surfactant and a polyoxyethylene alkyl ether carboxylic acid-based surfactant, each of which has a molecular weight of 500 or more, and an organic solvent.
    Type: Grant
    Filed: May 26, 2004
    Date of Patent: March 25, 2008
    Assignee: Sony Corporation
    Inventors: Tomio Kobayashi, Yoshihito Fukushima, Fumiko Kagawa, legal representative, Kazuhiko Morisawa, Hatsue Koishikawa, Masaki Kagawa
  • Fine particle dispersion composition, optical component, optical film laminate, polarization splitting device, and method for manufacturing the optical component
    Publication number: 20050163971
    Abstract: The invention provides a fine particle dispersion composition that does not depend on a curing method and that has adaptability to the curing methods and versatility and can provide a highly transparent optical component, an optical component using the fine particle dispersion composition and a method of manufacturing the same, and an optical film laminate using the optical component, and also provides a polarization splitting device using the optical component. In order to achieve the above, there is provided an optical component, which is obtained by curing a fine particle dispersion composition, which comprises metal-oxide fine particles, an organic resin material adapted to cure by absorbing energy, one of a polyoxyethylene alkyl ether phosphoric acid-based surfactant and a polyoxyethylene alkyl ether carboxylic acid-based surfactant, each of which has a molecular weight of 500 or more, and an organic solvent.
    Type: Application
    Filed: May 26, 2004
    Publication date: July 28, 2005
    Inventors: Tomio Kobayashi, Yoshihito Fukushima, Masaki Kagawa, Fumiko Kagawa, Kazuhiko Morisawa, Hatsue Koishikawa