Granted Patent
Utility
US 6,586,539 · App. 09/863,430
Polymerization control process
Inventors:
Eric Cassisa, Jean-Claude Chinh, Stephen Kevin Lee
Patented Case
View Patent ↗
Granted: Jul 1, 2003
Filed: May 24, 2001
Inventors
Eric Cassisa
Jean-Claude Chinh
Stephen Kevin Lee
Assignee (at issue)
BP Chemicals Limited
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.