Granted Patent
Utility
US 6,312,641 · App. 08/953,595
Method of making containers and preforms incorporating barrier materials
Inventor:
Gerald A. Hutchinson
Patented Case
View Patent ↗
Granted: Nov 6, 2001
Filed: Oct 17, 1997
Inventor
Gerald A. Hutchinson
Assignee (at issue)
Plastic Fabrication Technologies 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.