Granted Patent
Utility
US 6,447,703 · App. 09/599,458
Processes and systems for making synthetic bulked continuous filament yarns
Inventors:
David Waddington, Ann S. Johnson, Randall A. Sferrazza
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Jun 22, 2000
Inventors
David Waddington
Ann S. Johnson
Randall A. Sferrazza
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.