Patents by Inventor Larry B. Wadsworth

Larry B. Wadsworth 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).

  • Post-treatment of non-woven webs
    Patent number: 5730923
    Abstract: A method for post-treating a precursor nonwoven web including consolidating the web laterally, thereby reducing the maximum pore size measure of the web and improving the filtration efficiency of the web, and subjecting the consolidated web to an electrostatic field to further enhance filtration efficiency.
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: March 24, 1998
    Assignee: The University of Tennessee Research Corporation
    Inventors: Charles B. Hassenboehler, Jr., Larry B. Wadsworth
  • Electrically charged, consolidated non-woven webs
    Patent number: 5486411
    Abstract: A consolidated non-woven web made by post-treating a precursor nonwoven web including consolidating the web laterally by drawing, thereby reducing the maximum pore size measure of the web and improving the filtration efficiency of the web, and subjecting the consolidated web to an electrostatic field to further enhance filtration efficiency.
    Type: Grant
    Filed: September 28, 1992
    Date of Patent: January 23, 1996
    Assignee: The University of Tennessee Research Corporation
    Inventors: Charles B. Hassenboehler, Jr., Larry B. Wadsworth