Granted Patent
Utility
US 5,202,463 · App. 07/757,399
Process for the preparation of a glycol ether ester
Inventor:
Jude T. Ruszkay
Patented Case
View Patent ↗
Granted: Apr 13, 1993
Filed: Sep 10, 1991
Inventor
Jude T. Ruszkay
Assignee (at issue)
Arco Chemical Technology, L.P.
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.