Patents by Inventor Naoto Yamaguma

Naoto Yamaguma 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).

  • Method of operating air conditioner
    Patent number: 4368621
    Abstract: Disclosed is a method of operating an air conditioner having a plurality of indoor units connected to a common outdoor unit as heat source machine. When operation of a plurality of indoor units is dictated depending upon the temperature differences between the room temperatures and the set temperatures therefor, the indoor unit having the smallest temperature difference is determined among those indoor units which are to operate, and the amount of heat exchange is limited in the indoor unit having the smallest temperature difference to advantageously perform air conditioning in respective rooms in which the indoor units are provided.
    Type: Grant
    Filed: June 30, 1981
    Date of Patent: January 18, 1983
    Assignee: Hitachi, Ltd.
    Inventors: Naoto Yamaguma, Jyoji Okamoto, Tadahisa Masai, Takeshi Imaizumi, Yoshihiro Okita