Granted Patent
Utility
US 5,837,789 · App. 08/752,889
Fluid-absorbing polymers, processes used in their production and their application
Inventors:
Dolf Stockhausen, Hans-Georg Hartan, Helmut Brehm, Gerd Jonas, Bernfried Messner, Klaus Pflueger
Patented Case
View Patent ↗
Granted: Nov 17, 1998
Filed: Nov 20, 1996
Inventors
Dolf Stockhausen
Hans-Georg Hartan
Helmut Brehm
Gerd Jonas
Bernfried Messner
Klaus Pflueger
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.