Granted Patent
Utility
US 5,817,294 · App. 07/609,185
Plaque adsorbent oral composition and method
Inventor:
Michael Arnold
Patented Case
View Patent ↗
Granted: Oct 6, 1998
Filed: Nov 2, 1990
Inventor
Michael Arnold
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.