Patents by Inventor Noriaki Kiyohiro

Noriaki Kiyohiro 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).

  • Control apparatus for electroviscous fluid
    Patent number: 5377721
    Abstract: A control apparatus for an electroviscous fluid has a pair of electrodes between which the electroviscous fluid is disposed and a control device for applying nearly-trapezoidal shaped pulses positive and negative voltages alternately across the electrodes to control viscosity of the electroviscous fluid. The control apparatus changes gradually a voltage value when switching between the positive voltage and the negative voltage.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: January 3, 1995
    Assignee: CKD Corporation
    Inventors: Noriaki Kiyohiro, Kazutoshi Ito