Patents by Inventor Daniel Keith Lawson

Daniel Keith Lawson 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).

  • Through-air drying apparatus and methods of manufacture
    Patent number: 10745858
    Abstract: Methods of improving the drying rate of a cellulosic web, such as a tissue web, by providing an apparatus having two noncompressive dewatering devices, such as two through-air driers, where the temperature of the drying medium supplied to each device is separately controlled. The temperature of the medium supplied to the first device may exceed 450° F., such as from about 450 to about 600° F. On the other hand the temperature of the medium supplied to the second device may be less than the temperature supplied to the first, such as from about 350 to 450° F. Drying the web in this manner not only improves drying efficiency, but also limits or prevents degradation of the web, such as the combustion of cellulosic fibers making up the web or monosaccharides associated therewith. As such, webs that are substantially free from furan and acetaldehyde may be produced by the present methods.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: August 18, 2020
    Assignee: KIMBERLY-CLARK WORLDWIDE, INC.
    Inventors: Daniel Keith Lawson, Eric Kent Isom, Jr., Kenneth John Zwick, Robert James Seymour, Craig Steven Besaw, Christopher Lee Satori, Peter John Allen, Mark Alan Burazin
  • THROUGH-AIR DRYING APPARATUS AND METHODS OF MANUFACTURE
    Publication number: 20200240079
    Abstract: Methods of improving the drying rate of a cellulosic web, such as a tissue web, by providing an apparatus having two noncompressive dewatering devices, such as two through-air driers, where the temperature of the drying medium supplied to each device is separately controlled. The temperature of the medium supplied to the first device may exceed 450° F., such as from about 450 to about 600° F. On the other hand the temperature of the medium supplied to the second device may be less than the temperature supplied to the first, such as from about 350 to 450° F. Drying the web in this manner not only improves drying efficiency, but also limits or prevents degradation of the web, such as the combustion of cellulosic fibers making up the web or monosaccharides associated therewith. As such, webs that are substantially free from furan and acetaldehyde may be produced by the present methods.
    Type: Application
    Filed: June 27, 2018
    Publication date: July 30, 2020
    Inventors: Daniel Keith Lawson, Eric Kent Isom, Jr., Kenneth John Zwick, Robert James Seymour, Craig Steven Besaw, Christopher Lee Satori, Peter John Allen, Mark Alan Burazin