Patents by Inventor Sumio Matsui

Sumio Matsui 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).

  • Patent number: 4877154
    Abstract: A stack of folded and partially interleaved thin and soft sheets is held in a container such that the sheets can be drawn one at a time from the container. The container has a bottom formed with two pairs of opposing lower flexible lugs together defining a central discharge port and four blind extensions extending obliquely from opposite ends of the discharge port and having respective rounded ends. The flexibility of the lugs is such that on pulling of the lowermost sheet of the stack down through the port first the sheet flexes down one of the lugs of one of the pairs, then both lugs of the other pair, and finally the other lug of the one pair. Two pairs of opposite side have respective upper flexible lugs each extending the full width of the respective side and extending downward from the respective side toward the discharge port. The stack rests on all the upper flexible lugs.
    Type: Grant
    Filed: July 27, 1988
    Date of Patent: October 31, 1989
    Inventor: Sumio Matsui
  • Patent number: 4768679
    Abstract: A stack of folded and partially interleaved thin and soft sheets is held in a container such that the sheets can be drawn one at a time from the container. The container has a bottom formed with two pairs of opposing lower flexible lugs together defining a central discharge port and four blind extensions extending obliquely from opposite ends of the discharge port and having respective rounded ends. The flexibility of the lugs is such that on pulling of the lowermost sheet of the stack down through the port first the sheet flexes down one of the lugs of one of the pairs, then both lugs of the other pair, and finally the other lug of the one pair. Two pairs of opposite side have respective upper flexible lugs each extending the full width of the respective side and extending downward from the respective side toward the discharge port. The stack rests on all the upper flexible lugs.
    Type: Grant
    Filed: May 28, 1987
    Date of Patent: September 6, 1988
    Inventor: Sumio Matsui
  • Patent number: 4678099
    Abstract: A container for storing a stack of thin and soft sheet materials is provided. The container has a discharge port on the underside of the container through which the stacked sheet materials are dispensed one by one. The discharge port is defined by at least one pair of opposing flexible lugs and is enlarged by the sheet materials. When a sheet is drawn out of the container, one of the flexible lugs is contacted by the sheet and is pushed down so that the discharge port is enlarged to facilitate dispensing. Then the other one of the flexible lugs is contacted by the sheet and pushed down.
    Type: Grant
    Filed: October 2, 1985
    Date of Patent: July 7, 1987
    Inventor: Sumio Matsui