Granted Patent
Utility
US 6,025,448 · App. 08/659,976
Gas phase polymerization of olefins
Inventors:
Robert D. Swindoll, Bruce A. Story, Brian W. S. Kolthammer, Kevin P. Peil, David R. Wilson, James C. Stevens
Patented Case
View Patent ↗
Granted: Feb 15, 2000
Filed: Jun 3, 1996
Inventors
Robert D. Swindoll
Bruce A. Story
Brian W. S. Kolthammer
Kevin P. Peil
David R. Wilson
James C. Stevens
Assignee (at issue)
THE DOW CHEMICAL COMPANY
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.