Patents by Inventor Alvin Prokupek

Alvin Prokupek 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: 5048829
    Abstract: A new ball shaped amusement device is described wherein a core center of a ball is covered with a partial (figure-8) outer layer, thereby presenting a firm edge around the periphery of the partial layer. Moreover, this partial layer is chosen in the traditional figure-8 pattern generally seen as seams in popular baseballs, to present a striking visual resemblance as well as the desired irregular surface. With this surface contour the flight of the ball as well as its bounce take on new and unusual paths.
    Type: Grant
    Filed: February 13, 1991
    Date of Patent: September 17, 1991
    Inventor: Alvin Prokupek