Patents by Inventor Michael A. Redfern

Michael A. Redfern 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).

  • Method for sealing two compartment containers
    Patent number: 5714023
    Abstract: A method for sealing the open end of two compartment containers which are filled through an opening in the lower terminal end of each compartment. The method consists of placing a steel platen between the compartments at the lower end terminal edges of each compartment so that the terminal edges confront the opposing side faces of the platen. The lower terminal edges are then heated and a pair of dies are activated towards and away from one another to apply pressure to the lower terminal edges to seal the edges against the platen.
    Type: Grant
    Filed: February 23, 1996
    Date of Patent: February 3, 1998
    Assignee: Wheaton Holdings, Inc.
    Inventor: Michael A. Redfern