Granted Patent
Utility
US 6,506,316 · App. 09/856,674
Waterproofing agents for textile finishing
Inventors:
Bernd Wahle, Ludwid Boenniger, Wolfgang Tuerk
Patented Case
View Patent ↗
Granted: Jan 14, 2003
Filed: Sep 17, 2001
Inventors
Bernd Wahle
Ludwid Boenniger
Wolfgang Tuerk
Assignee (at issue)
Cognis Deutschland GmbH & Co. KG
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.