Granted Patent
Utility
US 5,874,040 · App. 08/892,311
Processing of polyesters
Inventors:
John Jamieson Liggat, Gregory S. O'Brien
Patented Case
View Patent ↗
Granted: Feb 23, 1999
Filed: Jul 14, 1997
Inventors
John Jamieson Liggat
Gregory S. O'Brien
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.