Granted Patent
Utility
US 5,911,228 · App. 08/678,619
Ingredient filled polytetrafluoroethylene dental floss devoid to grip enhancing coating
Inventors:
John P. Curtis, Karen J. DePierro, David Delgado
Patented Case
View Patent ↗
Granted: Jun 15, 1999
Filed: Jul 10, 1996
Inventors
John P. Curtis
Karen J. DePierro
David Delgado
Assignees (at issue)
Colgate-Palmolive Company
Coltec Industrial Products, LLC
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.