Granted Patent
Utility
US 4,789,700 · App. 07/117,080
Citrate esters and method
Inventors:
Ezekiel H. Hull, Edward P. Frappier
Patented Case
View Patent ↗
Granted: Dec 6, 1988
Filed: Nov 4, 1987
Inventors
Ezekiel H. Hull
Edward P. Frappier
Assignee (at issue)
Morflex Chemical Company, 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.