Granted Patent
Utility
US 6,509,436 · App. 09/606,459
Oxygen scavenging condensation copolymers for bottles and packaging articles
Inventors:
Paul J. Cahill, Stephen Y. Chen
Patented Case
View Patent ↗
Granted: Jan 21, 2003
Filed: Jun 29, 2000
Inventors
Paul J. Cahill
Stephen Y. Chen
Assignee (at issue)
BP Corporation North America Inc.
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.