Granted Patent
Utility
US 5,216,030 · App. 07/772,409
Antimicrobial, low toxicity, blend composition of bis-quaternary ammonium compounds and polyvinylpyrrolidone
Inventor:
John J. Merianos
Patented Case
View Patent ↗
Granted: Jun 1, 1993
Filed: Oct 7, 1991
Inventor
John J. Merianos
Assignee (at issue)
ISP INVESTMENTS 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.