Granted Patent
Utility
US 5,807,976 · App. 08/598,820
Method for product recovery of polyolefins
Inventor:
Stephen Craig McHaney
Patented Case
View Patent ↗
Granted: Sep 15, 1998
Filed: Feb 9, 1996
Inventor
Stephen Craig McHaney
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.