Granted Patent
Utility
US 6,388,120 · App. 09/301,532
Continuous process for the manufacture of phosphoric acid esters
Inventors:
Robert M. Farner, David W. Bartley, Jon D. Lehmkuhler
Patented Case
View Patent ↗
Granted: May 14, 2002
Filed: Apr 28, 1999
Inventors
Robert M. Farner
David W. Bartley
Jon D. Lehmkuhler
Assignee (at issue)
PABU Services, 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.