Patents by Inventor Wojrek S. Drewnowski

Wojrek S. Drewnowski 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).

  • Tampon applicator barrels having gripping structures and methods of forming
    Patent number: 7798986
    Abstract: A tampon applicator barrel including a cardboard tube having a first end and a second end and at least one gripping structure defined from the cardboard tube proximate the second end is provided. The cardboard tube has a wall thickness of between about 0.015 and about 0.020 inches, while the gripping structure has a height of up to about 0.035 inches.
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: September 21, 2010
    Assignee: Playtex Products, Inc.
    Inventors: Wayne D. Melvin, Michael L. Miller, Jamshid Rejai, Van T. Pham, Joseph S. Konrad, Wojrek S. Drewnowski