Patents by Inventor Hirofumi Mitekura

Hirofumi Mitekura 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
  • Semiconductor layer, solar cell using it, and production methods and applications thereof
    Patent number: 6916981
    Abstract: The objects of the present invention are to provide semiconductor layers for obtaining solar cells having a relatively high energy conversion efficiency, solar cells using the same, and their production methods and uses; all of which are solved by providing semiconductor layers that are used in solar cells and constructed by semiconductor particle groups having a plurality of peaks in particle size distribution, solar cells using the same, and their production methods and uses.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: July 12, 2005
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Fumio Matsui, Hirofumi Mitekura, Kentaro Yano, Toshiki Koyama, Yoshio Taniguchi
  • 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
  • Semiconductor layer, solar cell using it,and production methods and applications thereof
    Publication number: 20030155583
    Abstract: The objects of the present invention are to provide semiconductor layers for obtaining solar cells having a relatively high energy conversion efficiency, solar cells using the same, and their production methods and uses; all of which are solved by providing semiconductor layers that are used in solar cells and constructed by semiconductor particle groups having a plurality of peaks in particle size distribution, solar cells using the same, and their production methods and uses.
    Type: Application
    Filed: October 15, 2002
    Publication date: August 21, 2003
    Inventors: Fumio Matsui, Hirofumi Mitekura, Kentaro Yano, Toshiki Koyama, Yoshio Taniguchi