Granted Patent
Utility
US 4,365,080 · App. 06/265,632
Production of dimethyl esters
Inventor:
Norbert F. Cywinski
Patented Case
View Patent ↗
Granted: Dec 21, 1982
Filed: May 20, 1981
Inventor
Norbert F. Cywinski
Assignee (at issue)
El Paso Products 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.