Granted Patent
Utility
US 6,475,582 · App. 09/517,249
Co-extruded, multi-layer tubing made from polyamide and olefin polymer materials
Inventors:
Tam T. M. Phan, Anthony J. DeNicola, Jr., John C. Haylock
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Mar 2, 2000
Inventors
Tam T. M. Phan
Anthony J. DeNicola, Jr.
John C. Haylock
Assignee (at issue)
Basell Poliolefine Italia S.r.l.
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.