Patents by Inventor Yasuji Imai

Yasuji Imai 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).

  • Shelf apparatus for a refrigerator
    Patent number: 5199778
    Abstract: The present invention relates to a shelf appartus for a refrigerator which raises and lowers a refrigerator's food storage shelves in an analog manner, making it possible to determine the positions of the shelves largely in accordance with the size of food items stored inside the refrigerator. More particularly, racks are provided on the left and right sides of the refrigerator's interior, gears which engage these racks are provided on the shelves of the refrigerator, and the food storage shelves are raised and lowered by rotating these gears.
    Type: Grant
    Filed: January 17, 1991
    Date of Patent: April 6, 1993
    Assignee: Matsushita Refrigeration Company
    Inventors: Takashi Aoki, Minoru Yonemura, Hiroji Ito, Akihiro Shigeta, Yasuji Imai, Tatsuo Miyachi, Tomoyuki Nishimura, Naoya Ishikawa