Patents by Inventor Hideo Ohtaka

Hideo Ohtaka 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).

  • Photosensitizing composition
    Publication number: 20050236036
    Abstract: The objectives of this invention are to provide a photosensitizing composition which gives an improved photoelectric conversion efficiency in photoelectric conversion elements such as solar cells, and to its uses. This invention attains the above objectives by providing a photosensitizing composition comprising two different types of organic compounds, a semiconductor electrode sensitized with the photosensitizing composition, a photoelectric conversion element, and a solar cell using the photosensitizing composition.
    Type: Application
    Filed: April 17, 2003
    Publication date: October 27, 2005
    Inventors: Hideo Ohtaka, Kentaro Yano, Hirofumi Mitekura, Fumio Matsui
  • Solar cell
    Publication number: 20040074531
    Abstract: The present invention aims to provide a solar cell which has an improved processibility suitable for industrial-scale and which is easily prepared at a lower cost.
    Type: Application
    Filed: June 24, 2003
    Publication date: April 22, 2004
    Inventors: Fumio Matsui, Toshiki Koyama, Yoshio Taniguchi, Hirofumi Mitekura, Kentaro Yano, Hideo Ohtaka
  • Water treatment agent
    Patent number: 4666609
    Abstract: A water treatment agent to be used by adding it to water systems, such as, those in boiler plant and water cooling circulation system, for preventing both corrosion and scale formation on the metal surfaces held in contact with water in the water systems, comprising, as effective components, a polymer product having maleic acid or maleic anhydride unit and a polymer product having acarylamide or methacrylamide unit.
    Type: Grant
    Filed: October 24, 1985
    Date of Patent: May 19, 1987
    Assignee: Kurita Water Industries Ltd.
    Inventors: Takao Tsuneki, Shinji Ano, Takahiko Uchida, Tomoyasu Imai, Masaru Okamoto, Hideo Ohtaka, Hiromi Murakami