Patents by Inventor Mark Andre Wojtkiewicz

Mark Andre Wojtkiewicz 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).

  • Adjustable hoop and method of using the same
    Patent number: 6648717
    Abstract: A hoop having an adjustable diameter and including a fixed portion and an adjustable portion. The adjustable portion can be disposed in an extended configuration and a collapsed configuration. A user can vary the diameter of the hoop by moving a first end of the adjustable member with respect to a second end of the adjustable member.
    Type: Grant
    Filed: May 10, 2002
    Date of Patent: November 18, 2003
    Assignee: Mattel, Inc.
    Inventors: Daniel Dignitti, David E. Moomaw, Gerald P. Sitarski, Mark Andre Wojtkiewicz