Patents by Inventor David G. Unrau

David G. Unrau 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).

  • Absorbent product
    Patent number: 5281207
    Abstract: An absorbent product, for use in absorbent articles, comprising an absorbent layer and a wicking layer of densified hydrophilic material. The absorbent layer comprises resilient hydrophilic fibers and superabsorbent material. The absorbent layer includes at least one area comprising a bulky fibrous structure having high void regions of low fiber density randomly distributed in the structure.
    Type: Grant
    Filed: April 1, 1992
    Date of Patent: January 25, 1994
    Assignee: Paragon Trade Brands, Inc.
    Inventors: Harry J. Chmielewski, John R. Cook, David G. Unrau, Migaku Suzuki
  • Method of making an absorbent product
    Patent number: 5171391
    Abstract: An absorbent product, for use in absorbent articles, comprising an absorbent layer and a wicking layer of densified hydrophilic material. The absorbent layer comprises resilient hydrophilic fibers and superabsorbent material. The absorbent layer includes at least one area comprising a bulky fibrous structure having high void regions of low fiber density randomly distributed in the structure.
    Type: Grant
    Filed: October 25, 1991
    Date of Patent: December 15, 1992
    Assignee: Weyerhaeuser Company
    Inventors: Harry J. Chmielewski, John R. Cook, David G. Unrau, Migaku Suzuki
  • Flame resistant cellulosic product containing antimony pentoxide and polyvinyl bromide
    Patent number: 4123398
    Abstract: A regenerated cellulosic product is made flame resistant by the addition to the cellulosic solution from which the product is regenerated of from 3 to 7% by weight of colloidal antimony pentoxide and from 5 to 30% by weight of polyvinyl bromide.
    Type: Grant
    Filed: May 25, 1977
    Date of Patent: October 31, 1978
    Assignee: International Telephone and Telegraph Corporation
    Inventors: David G. Unrau, Norman A. Portnoy, Peter J. Hartmann