Granted Patent
Utility
US 5,244,546 · App. 07/450,773
Process for preparing tetraalkyl butanetetracarboxylates
Inventors:
Eduardo A. Casanova, John H. Wagenknecht
Patented Case
View Patent ↗
Granted: Sep 14, 1993
Filed: Dec 14, 1989
Inventors
Eduardo A. Casanova
John H. Wagenknecht
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.