Granted Patent
Utility
US 5,409,501 · App. 08/182,009
Dilutable aluminum triformate tanning agents in the form of highly concentrated, storable aqueous solutions and their use
Inventors:
Rudolf Zauns-Huber, Jochen Hieber, Loert de Riese-Meyer, Christine Schroeder
Patented Case
View Patent ↗
Granted: Apr 25, 1995
Filed: Mar 14, 1994
Inventors
Rudolf Zauns-Huber
Jochen Hieber
Loert de Riese-Meyer
Christine Schroeder
Assignee (at issue)
Henkel Kommanditgesellschaft auf Aktien
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.