Granted Patent
Utility
US 6,051,317 · App. 08/894,475
Sheet-like superabsorbent structures
Inventors:
Helmut Brueggemann, Kurt Dahmen, Dieter Lehwald, Roland Theilmann
Patented Case
View Patent ↗
Granted: Apr 18, 2000
Filed: Aug 20, 1997
Inventors
Helmut Brueggemann
Kurt Dahmen
Dieter Lehwald
Roland Theilmann
Assignee (at issue)
Stockhausen 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.