Patents by Inventor Donald Waldroup

Donald Waldroup 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).

  • Publication number: 20070148432
    Abstract: A hybrid absorbent foam includes an integrated hybrid foam layer having an open surface, a closed surface, and a foam body extending between the open and closed surfaces. The integrated hybrid foam layer has an open-cell content of at least 50%, while the closed surface provides a barrier to aqueous liquids. The integrated hybrid foam layer is formed as a single layer, and has a substantially uniform polymer composition throughout its thickness. The integrated hybrid foam layer combines the functions of liquid absorbency, retention, and barrier into a single layer, and is useful in a wide variety of absorbent articles.
    Type: Application
    Filed: December 22, 2005
    Publication date: June 28, 2007
    Inventors: Andrew Baker, Timothy Blenke, Charles Colman, Edward Colombo, Jeffrey Fish, Kaiyuan Yang, Michael Garvey, Jeffrey Krueger, Mary Mallory, Joseph Pierce, Fred Radwanski, Sridhar Ranganathan, Donald Waldroup
  • Publication number: 20060030632
    Abstract: A soft, flexible, low-density, open-cell, thermoplastic, absorbent foam formed from a foam polymer formula including a balanced amount of a plasticizing agent and a surfactant in combination with a base resin. Thermoplastic elastomers can be added to the foam polymer formula to improve softness, flexibility, elasticity, and resiliency of the resulting foam. The surfactant may be either a single surfactant or a multi-surfactant system. The foam possesses a number of qualities, such as softness and strength, which render the foam particularly suitable for use in a variety of personal care products, medical products, and the like.
    Type: Application
    Filed: September 2, 2005
    Publication date: February 9, 2006
    Inventors: Jeffrey Krueger, Fred Radwanski, Mark Reichmann, Peter Elliker, Ali Yahiaoui, Renette Richard, Oomman Thomas, Charles Colman, Andrew Baker, Jenny Day, Xiaomin Zhang, Sridhar Ranganathan, Edward Colombo, Donald Waldroup