Patents by Inventor Daniel R. Spisiak, Jr.

Daniel R. Spisiak, Jr. 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).

  • Gradual release structures for chewing gum
    Patent number: 5198251
    Abstract: Gradual release structures for the release of active agents in chewing gum and a process for making such structures are provided. The gradual release structures are formed by extrusion techniques and comprise an active agent and a wall material.
    Type: Grant
    Filed: December 16, 1991
    Date of Patent: March 30, 1993
    Assignee: Wm. Wrigley Jr. Company
    Inventors: Joo H. Song, Charles M. Copper, Daniel R. Spisiak, Jr.