Patents by Inventor Joel W. Wennerstrom

Joel W. Wennerstrom 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).

  • Closure with dispensing flap stay-open construction
    Patent number: 6575323
    Abstract: A dispensing closure with a hinged flap for conveniently opening and closing a dispensing aperture. The closure is a one-piece molded part having an integral living hinge. A mechanism for releasably locking the flap in a stay-open position and thereby resisting any tendency of the hinge to resiliently bias the flap towards a closed position is provided. The stay-open mechanism comprises a cooperating pair of surfaces molded into the flap and main body of the closure which are arranged to snap into and out of locking engagement when the flap is deliberately moved into or out of the open position.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: June 10, 2003
    Assignee: Weatherchem Corporation
    Inventors: Douglas S. Martin, Joel W. Wennerstrom
  • Container
    Patent number: D453892
    Type: Grant
    Filed: October 13, 2000
    Date of Patent: February 26, 2002
    Assignee: McNeil-PPC, Inc.
    Inventors: Dean Lindsay, J. Tirso Olivares, Joel W. Wennerstrom, James P. Black, Douglas S. Martin
  • Liquid dispensing closure
    Patent number: D468639
    Type: Grant
    Filed: October 10, 2001
    Date of Patent: January 14, 2003
    Assignee: Weatherchem Corporation
    Inventors: Joel W. Wennerstrom, Douglas S. Martin
  • Infant bath tub
    Patent number: D350598
    Type: Grant
    Filed: October 1, 1993
    Date of Patent: September 13, 1994
    Assignee: Century Products Company
    Inventors: Robert D. Wise, Joel W. Wennerstrom, Tom V. McLinden, Daniel Haberstitch
  • Child's toilet trainer
    Patent number: D351223
    Type: Grant
    Filed: October 1, 1993
    Date of Patent: October 4, 1994
    Assignee: Century Products Company
    Inventors: Robert D. Wise, Joel W. Wennerstrom, Peter J. Myers
  • Collapsible infant stroller
    Patent number: D365784
    Type: Grant
    Filed: November 4, 1994
    Date of Patent: January 2, 1996
    Assignee: Century Products Company
    Inventors: Joel W. Wennerstrom, Er-jui Chen, Ling C. Chang
  • Sachet case
    Patent number: D404201
    Type: Grant
    Filed: January 28, 1998
    Date of Patent: January 19, 1999
    Assignee: Weatherchem Corporation
    Inventor: Joel W. Wennerstrom