Granted Patent
Utility
US 5,364,964 · App. 08/143,596
Process for preparing 1,2,3,4-butanetetracarboxylic acid
Inventors:
Eduardo A. Casanova, Dennis J. Kalota
Patented Case
View Patent ↗
Granted: Nov 15, 1994
Filed: Nov 1, 1993
Inventors
Eduardo A. Casanova
Dennis J. Kalota
Assignee (at issue)
Monsanto Company
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.