Granted Patent
Utility
US 5,436,049 · App. 08/171,135
Process for the manufacture of a stain resistant carpet
Inventor:
Harry Hu
Patented Case
View Patent ↗
Granted: Jul 25, 1995
Filed: Dec 21, 1993
Inventor
Harry Hu
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.