Granted Patent
Utility
US 5,157,089 · App. 07/699,439
Citric ester diluents
Inventors:
Jimmy D. Elmore, Elizabeth G. Zylla, George A. Roy, II
Patented Case
View Patent ↗
Granted: Oct 20, 1992
Filed: May 13, 1991
Inventors
Jimmy D. Elmore
Elizabeth G. Zylla
George A. Roy, II
Assignee (at issue)
Hi-Tek Polymers, 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.