Patents by Inventor Jan Chmielewski

Jan Chmielewski 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).

  • Waste remover for die cut blanks
    Patent number: 5197938
    Abstract: An apparatus and method for stripping and removing external and internal waste automatically from previously die-cut blanks is described. Independently positionable stripping belts permit stripping external perimeter and internal lengthwise strips of waste material from the blanks, followed by vibrating and brushing the blanks for automatic removal of loosely held internal waste.
    Type: Grant
    Filed: October 31, 1991
    Date of Patent: March 30, 1993
    Assignee: International Stripping & Die Cutting Corp.
    Inventor: Jan Chmielewski