Patents Assigned to De Ster Corporation
  • Patent number: 6572909
    Abstract: A plastic container has a base and a lid hinged together by a hinge. The hinge has a series of relatively thick sections joined together by a series of relatively thin sections. The thin sections are sufficiently thin to be severed upon an initial folding of the hinge. The thick sections are sufficiently thick to remain at least partially intact during the initial folding. The container may be filled with product and closed with the hinge becoming partially severed and weakened and may be later opened with the hinge becoming completely severed to separate the base and the lid.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: June 3, 2003
    Assignee: De Ster Corporation
    Inventors: Terry Steven Bagwell, W. John Squire
  • Patent number: D489254
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: May 4, 2004
    Assignee: De Ster Corporation
    Inventors: Stephen J. Kocis, Harold K. Sadler, Oyvind Forland
  • Patent number: D373931
    Type: Grant
    Filed: August 30, 1995
    Date of Patent: September 24, 1996
    Assignee: De Ster Corporation
    Inventor: Daniel T. Whitehead
  • Patent number: D418371
    Type: Grant
    Filed: June 1, 1998
    Date of Patent: January 4, 2000
    Assignee: De Ster Corporation
    Inventor: Daniel Thomas Whitehead