Granted Patent
Utility
US 5,214,142 · App. 07/585,563
Processes for the preparation of aminoethers
Inventor:
Stephen W. King
Patented Case
View Patent ↗
Granted: May 25, 1993
Filed: Sep 20, 1990
Inventor
Stephen W. King
Assignee (at issue)
Union Carbide Chemicals & Plastics Technology LLC
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.