Granted Patent
Utility
US 5,891,448 · App. 08/741,333
Control of calcium fluoride formation in mouth rinses, dentifrices and gels
Inventors:
Laurence C. Chow, Shozo Takagi
Patented Case
View Patent ↗
Granted: Apr 6, 1999
Filed: Oct 29, 1996
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.