Granted Patent
Utility
US 5,145,668 · App. 07/633,628
Fluoride containing mouth rinses, dentifrices, and gels
Inventors:
Laurence C. Chow, Shozo Takagi
Patented Case
View Patent ↗
Granted: Sep 8, 1992
Filed: Dec 21, 1990
Inventors
Laurence C. Chow
Shozo Takagi
Assignee (at issue)
American Dental Association Health Foundation
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.