Granted Patent
Utility
US 4,822,784 · App. 06/861,853
Complex salt
Inventor:
Henning Cierpka
Patented Case
View Patent ↗
Granted: Apr 18, 1989
Filed: May 12, 1986
Inventor
Henning Cierpka
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.