Granted Patent
Utility
US 5,505,864 · App. 08/167,561
Tanning agent containing a dialdehyde
Inventors:
Harald Bauer, Juergen Christner, Gertrud Wick
Patented Case
View Patent ↗
Granted: Apr 9, 1996
Filed: Dec 14, 1993
Inventors
Harald Bauer
Juergen Christner
Gertrud Wick
Assignee (at issue)
ROHM CO., LTD.
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.