Patents by Inventor Ryouhei Minowa

Ryouhei Minowa 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).

  • Absorbing type water cooling-heating apparatus
    Patent number: 5617733
    Abstract: The invention provides an absorbing type water cooling-heating apparatus which employs an electrically-operated valve and an improved method of diluting a solution for automatically changing between heating operation and cooling operation only by operating a cooling-heating change-over switch.
    Type: Grant
    Filed: September 19, 1995
    Date of Patent: April 8, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Syuji Tomita, Ryouhei Minowa