Granted Patent
Utility
US 5,554,441 · App. 08/046,861
Random macrodomain multiconstituent fibers, their preparation, and nonwoven structures from such fibers
Inventors:
Rakesh Gupta, Jon R. Williams
Patented Case
View Patent ↗
Granted: Sep 10, 1996
Filed: Apr 16, 1993
Inventors
Rakesh Gupta
Jon R. Williams
Assignee (at issue)
HERCULES LLC
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.