Granted Patent
Utility
US 6,033,609 · App. 08/959,522
Device and method to prevent spinneret hole contamination
Inventors:
Donald E. Wright, Albert R. Moorhead
Patented Case
View Patent ↗
Granted: Mar 7, 2000
Filed: Oct 28, 1997
Inventors
Donald E. Wright
Albert R. Moorhead
Assignee (at issue)
BASF SE
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.