Patents Represented by Attorney, Agent or Law Firm Allan Wheatcraft
  • Dental floss having low density and method of making same
    Patent number: 6539951
    Abstract: A dental floss comprising a porous PTFE fiber having a density of less than about 0.7 g/cc. The inventive floss is abrasion resistant, grippable and has a soft feel to the hands and a rough feel in the mouth. The floss is made by an extrusion process with non-contact heating during subsequent expansion with amorphous locking.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: April 1, 2003
    Assignee: Gore Enterprise Holdings, Inc.
    Inventors: Richard L. Baillie, James H. Chastain, John W. Dolan, William Hammond Wiley