Patents by Inventor David Unrau

David 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).

  • Fluted composite and related absorbent articles
    Publication number: 20060081348
    Abstract: An absorbent composite that includes a fibrous matrix having absorbent material dispersed in bands along the composite's length is disclosed. The bands define liquid distribution zones. On liquid contact, absorbent material swelling occurs and produces a wetted composite having flutes that include swollen absorbent material separated by distribution zones, regions of the composite that are substantially free of absorbent material. Absorbent articles that include the composite are also disclosed.
    Type: Application
    Filed: March 17, 2005
    Publication date: April 20, 2006
    Inventors: Peter Graef, Clifford Bolstad, Fred Howard, David Unrau, David Marsh, Charles Miller, Andre Hajnal
  • Absorbent products incorporating individualized intrafiber crosslinked cellulosic fibers with improved brightness and color
    Publication number: 20050148966
    Abstract: An absorbent product is described in which cellulosic fibers are reacted with an effective amount of a crosslinking agent in the presence of an effective amount of a C4-C12 polyol. The individualized intrafiber crosslinked cellulosic fibers are characterized by a Whiteness Index, (WICDM-L) greater than about 69. The crosslinked fibers can be incorporated into infant diapers, adult incontinent products, feminine hygiene products and paperboard products.
    Type: Application
    Filed: December 30, 2003
    Publication date: July 7, 2005
    Inventors: Angel Stoyanov, Shahrokh Naieni, David Unrau
  • Method for forming individualized intrafiber crosslinked cellulosic fibers with improved brightness and color
    Publication number: 20050143571
    Abstract: A method for forming individualized intrafiber crosslinked cellulosic fibers with improved color and brightness properties.
    Type: Application
    Filed: December 30, 2003
    Publication date: June 30, 2005
    Inventors: Angel Stoyanov, Shahrokh Naieni, David Unrau