Granted Patent
Utility
US 6,274,641 · App. 09/678,910
Tetrafunctional initiator
Inventor:
Steven M. Krupinski
Patented Case
View Patent ↗
Granted: Aug 14, 2001
Filed: Oct 4, 2000
Inventor
Steven M. Krupinski
Assignee (at issue)
NOVA Chemicals Corporation
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.