Patents by Inventor Masako Sakuragi

Masako Sakuragi 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).

  • Photorecording element and liquid crystal cell comprising the same
    Patent number: 4963448
    Abstract: A photorecording element is disclosed which consists of a transparent substrate, a molecular layer of an organic compound with an ability to change structure reversibly by virtue of light and disposed in direct contact with the transparent substrate, and a layer of liquid crystals disposed in direct contact with the molecular layer. A liquid crystal cell comprising the photorecording element is also disclosed. A modification having fine deformations on the surface of the transparent substrate and a modification having a dichroic dye contained in the layer of liquid crystals are embraced by the present invention.
    Type: Grant
    Filed: August 31, 1988
    Date of Patent: October 16, 1990
    Assignees: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Kunihiro Ichimura, Yasuzo Suzuki, Takahiro Seki, Masako Sakuragi, Takashi Tamaki, Akira Hosoki, Koso Aoki
  • Chelate, crosslinked polyethyleneimine resin having 2-hydroxy benzoyl group
    Patent number: 4678844
    Abstract: A novel chelate resin is produced by causing a 2-hydroxybenzoic acid derivative to react upon a high molecular compound, i.e. a cross-linked polyethyleneimine or a cross-linked polyethyleneimine derivative, thereby linking a 2-hydroxybenzoyl group to the nitrogen atom in the imine chain of the high molecular compound. This chelate resin is capable of collecting, by adsorption and at high efficiency, such a metal as uranium dissolved in a trace amount in water.
    Type: Grant
    Filed: February 24, 1986
    Date of Patent: July 7, 1987
    Assignees: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Masako Sakuragi, Kunihiro Ichimura