Granted Patent
Utility
US 4,362,820 · App. 06/278,900
Process for producing ethylene glycol and methanol
Inventor:
Leonard Kaplan
Patented Case
View Patent ↗
Granted: Dec 7, 1982
Filed: Jun 29, 1981
Inventor
Leonard Kaplan
Assignee (at issue)
Union Carbide Corporation
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.