Patents by Inventor Wilfred E. Riddell

Wilfred E. Riddell 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: 7514591
    Abstract: An interlabial absorbent article configured for disposition primarily within the vestibule of a female wearer includes a generally liquid permeable cover sheet, a generally liquid impermeable back sheet, and an absorbent material disposed between the cover sheet and the back sheet. The back sheet has a water vapor transmission rate that is at least about 20% of a water vapor transmission rate of the cover sheet. The cover sheet and said back sheet may have a contact angle mismatch of less than about 25%. The absorbent material may have a density greater than water. Upon being flushed, the article has an initial neutral buoyancy and subsequently sinks within about 7 days from being flushed.
    Type: Grant
    Filed: December 10, 2003
    Date of Patent: April 7, 2009
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Ann Marie Przepasniak, Susan M. Weyenberg, Patricia A. Mitchler, Heather A. Sorebo, Wilfred E. Riddell
  • Patent number: 5062716
    Abstract: The present invention comprises a novel staged release bag formed of a generally thermoplastic film material preferably having multiple layers and having discrete cuts formed therein including wickets holes, stabilizing cuts and release paths, and which is useful in an automated packaging operation, and a method for making said bag from a continuous tube or sheet of plastic material.
    Type: Grant
    Filed: March 7, 1990
    Date of Patent: November 5, 1991
    Assignees: Kimberly-Clark Corp., Paramount Packaging Corp.
    Inventors: Daniel J. Conrad, Jerry W. Davenport, Robert R. Isen, Michael A. Bullock, Wilfred E. Riddell
  • Patent number: 4773541
    Abstract: A kraft paper package contains at least one tear-away opening means which comprises: (1) a pull strip affixed to and circumscribing the inside of the package; and (2) a guide tape affixed to the outside of the package in parallel juxtaposition with the pull strip. When the package is opened, the package is sheared in a straight line between the edges of the pull strip and guide tape, resulting in a clean reinforced edge.
    Type: Grant
    Filed: March 6, 1987
    Date of Patent: September 27, 1988
    Assignee: Kimberly-Clark Corporation
    Inventor: Wilfred E. Riddell