Patents by Inventor Daniel R. Sprangers

Daniel R. Sprangers 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).

  • Method of forming a tissue with surfaces having elevated regions
    Patent number: 6478927
    Abstract: A method for forming a paper web with two surfaces having elevated regions is provided. The elevated regions can be imparted onto the surfaces of the tissue utilizing various papermaking techniques and devices, such as using patterned fabrics, wire-mesh, and/or pressure rolls. A tissue formed according to the present invention can have a substantial fiber density gradient in the −z direction and a relatively low fiber density gradient in the x-y plane. Moreover, the tissue can also have a substantial pore size distribution gradient in the −z direction and a relatively low pore size distribution gradient in the x-y plane for improved absorption properties.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: November 12, 2002
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Patrick P. Chen, Daniel R. Sprangers, Mark A. Burazin