Patents by Inventor Krzysztof Matyja

Krzysztof Matyja 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).

  • Expandable bag
    Patent number: 4946290
    Abstract: A flexible bag having a tapered body portion with a closed bottom narrower than a top thereof. The bag has a handle portion and a folding portion coupling the body portion to the handle portion. The handle portion includes two handle halves separable to open the bag. The bag is movable from a flat position in which the holding portion is folded to an expanded unfolded position in response to the weight of objects to be carried.
    Type: Grant
    Filed: September 13, 1988
    Date of Patent: August 7, 1990
    Inventor: Krzysztof Matyja