Patents by Inventor William D. Barrows

William D. Barrows 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).

  • Tactile Air Filter Media
    Publication number: 20140196423
    Abstract: An apparatus and method for a tactile air filter including a filter media composed primarily of glass fibers having a softening finish applied thereto.
    Type: Application
    Filed: January 11, 2013
    Publication date: July 17, 2014
    Applicant: AMERICAN AIR FILTER COMPANY INC
    Inventors: William D. Barrows, Lewis Sanders
  • Fibrous-reinforced sheet
    Patent number: 5736008
    Abstract: A process for forming a highly filled, fibrous-reinforced sheet in which the sheet is formed from an aqueous dispersion of solids which include fibers, filler, and binder and cationic flocculating agent by continuously feeding a stream of such aqueous dispersion onto a moving porous support surface, wherein the filler comprises at least about 50 wt. % of the solids portion of the dispersion, the improvement comprising the use in the aqueous dispersion of a filler consisting essentially of calcium carbonate and a cationic polymeric flocculant having a charge-density of at least about 2 equivalents of cationic nitrogen per kilogram of polymer, and a highly-filled calcium carbonate-containing sheet, and the use of carbon black to impart opacity to paper or sheet that has a white appearance.
    Type: Grant
    Filed: April 8, 1993
    Date of Patent: April 7, 1998
    Assignee: Congoleum Corporation
    Inventors: William D. Barrows, George H. Crouse, John F. Morton
  • Fibrous-reinforced sheet
    Patent number: 5679443
    Abstract: A process for forming a highly filled, fibrous-reinforced sheet in which the sheet is formed from an aqueous dispersion of solids which include fibers, filler, and binder and cationic flocculating agent by continuously feeding a stream of such aqueous dispersion onto a moving porous support surface, wherein the filler comprises at least about 50 wt. % of the solids portion of the dispersion, the improvement comprising the use in the aqueous dispersion of a filler consisting essentially of calcium carbonate and a cationic polymeric flocculant having a charge-density of at least about 2 equivalents of cationic nitrogen per kilogram of polymer, and a highly-filled calcium carbonate-containing sheet, and the use of carbon black to impart opacity to paper or sheet that has a white appearance.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: October 21, 1997
    Assignee: Congoleum Corporation
    Inventors: William D. Barrows, George H. Crouse, John F. Morton