Granted Patent
Utility
US 6,476,149 · App. 10/121,387
Tetrafunctional initiator
Inventor:
Steven M. Krupinski
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Apr 12, 2002
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.