Granted Patent
Utility
US 5,451,394 · App. 08/111,690
Quaternary salts of para-dialkylamino benzamide derivatives
Inventors:
Ratan K. Chaudhuri, Anatoly Alexander, Anna A. Gripp
Patented Case
View Patent ↗
Granted: Sep 19, 1995
Filed: Aug 25, 1993
Inventors
Ratan K. Chaudhuri
Anatoly Alexander
Anna A. Gripp
Assignee (at issue)
ISP Van Dyk Inc.
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.