Granted Patent
Utility
US 4,584,189 · App. 06/655,836
Bactericidal toothpastes
Inventor:
Dianne P. Leipold
Patented Case
View Patent ↗
Granted: Apr 22, 1986
Filed: Sep 28, 1984
Inventor
Dianne P. Leipold
Assignee (at issue)
HERCULES 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.