Granted Patent
Utility
US 5,523,433 · App. 08/315,105
Process for the preparation of diethyl ester dimethyl ammonium chloride
Inventors:
Christopher J. Toney, Phillip S. Welte, Robert K. Lagerman
Patented Case
View Patent ↗
Granted: Jun 4, 1996
Filed: Sep 29, 1994
Inventors
Christopher J. Toney
Phillip S. Welte
Robert K. Lagerman
Assignee (at issue)
Witco Corporation
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.