Patents by Inventor Shizuka Takami

Shizuka Takami 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).

  • Light-activated actuator element
    Patent number: 8648206
    Abstract: Disclosed is light-driven actuator element characterized in that, inter alia, it can be reduced to micrometer size, is rapidly responsive, and reversibly changes to enable repeated use. The light-driven actuator element includes a crystal of diarylethene compound which changes shape upon photoisomerization (e.g., the compound of Structural Formula (I) below, where R1 represents a hydrogen atom or methyl group and R2 represents a methyl group). The element can be a rod-shaped or plate-like microcrystal having a size on the order of micrometer. The element bends (or contracts) on irradiation with ultraviolet light and expands to return to the original size on irradiation with visible light.
    Type: Grant
    Filed: October 22, 2007
    Date of Patent: February 11, 2014
    Assignee: Kyushu University, National University Corporation
    Inventors: Masahiro Irie, Shizuka Takami
  • LIGHT-ACTIVATED ACTUATOR ELEMENT
    Publication number: 20100016608
    Abstract: Disclosed is light-driven actuator element characterized in that, inter alia, it can be reduced to micrometer size, is rapidly responsive, and reversibly changes to enable repeated use. The light-driven actuator element includes a crystal of diarylethene compound which changes shape upon photoisomerization (e.g., the compound of Structural Formula (I) below, where R1 represents a hydrogen atom or methyl group and R2 represents a methyl group). The element can be a rod-shaped or plate-like microcrystal having a size on the order of micrometer. The element bends (or contracts) on irradiation with ultraviolet light and expands to return to the original size on irradiation with visible light.
    Type: Application
    Filed: October 22, 2007
    Publication date: January 21, 2010
    Inventors: Masahiro Irie, Shizuka Takami