Patents by Inventor Seiichi Iizima

Seiichi Iizima 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).

  • Air conditioning system
    Patent number: 5295904
    Abstract: An air conditioning system has a plurality of profile elements which are attached to the ceiling of a room and arranged to extend in line in such a manner as to define with the ceiling surface and a wall surface a channel-like space, and an air conditioner and accessories thereof. The profile elements are classified into a plurality of groups in terms of length but have the same cross-sectional configuration, so that they do not spoil the appearance of the interior of the room in which the air conditioning system is installed.
    Type: Grant
    Filed: February 25, 1992
    Date of Patent: March 22, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Yukio Aoki, Masaji Yamashita, Seiichi Iizima