Granted Patent
Utility
US 6,818,709 · App. 10/618,248
Production of vinyl alcohol copolymers
Inventor:
Richard Vicari
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: Jul 11, 2003
Inventor
Richard Vicari
Assignee (at issue)
Celanese International 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.