Patents by Inventor Wojtek S. Drewnowski

Wojtek 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: 8539660
    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: February 25, 2011
    Date of Patent: September 24, 2013
    Assignee: Playtex Products, Inc.
    Inventors: Wayne D. Melvin, Michael L. Miller, Jamshid Rejai, Van T. Pham, Joseph S. Konrad, Wojtek S. Drewnowski
  • TAMPON APPLICATOR BARRELS HAVING GRIPPING STRUCTURES AND METHODS OF FORMING
    Publication number: 20110140308
    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: Application
    Filed: February 25, 2011
    Publication date: June 16, 2011
    Inventors: WAYNE D. MELVIN, Michael L. Miller, Jamshid Rejai, Van T. Pham, Joseph S. Konrad, Wojtek S. Drewnowski
  • Tampon applicator barrels having gripping structures and methods of forming
    Patent number: 7918004
    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: September 29, 2006
    Date of Patent: April 5, 2011
    Assignee: Playtex Products, Inc.
    Inventors: Wayne D. Melvin, Michael L. Miller, Jamshid Rejai, Van T. Pham, Joseph S. Konrad, Wojtek S. Drewnowski