Patents Assigned to Nittesu Mining Co., Ltd.
  • Rheological fluid
    Patent number: 6280658
    Abstract: A rheological fluid of a bright color which has excellent light resistance and weather resistance, is stable even when used in a high-temperature environment, can be stored over long, and mightily and precisely actuates in response to an electric field or a magnetic field or to both. The rheological fluid comprises a medium in which a film-coated powder comprising a base particle having thereon a coating layer(s) is dispersed.
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: August 28, 2001
    Assignees: Nittesu Mining Co., Ltd.
    Inventors: Takafumi Atarashi, Katsuto Nakatsuka