Granted Patent
Utility
US 6,541,545 · App. 09/273,040
Grouting compositions
Inventors:
Walter John Simmons, Domenic J. Barsotti
Patented Case
View Patent ↗
Granted: Apr 1, 2003
Filed: Mar 19, 1999
Inventors
Walter John Simmons
Domenic J. Barsotti
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
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.