Granted Patent
Utility
US 5,128,328 · App. 07/783,053
Heterocyclic bisphosphonic acid derivatives
Inventors:
Arie Zask, Richard Coghlan
Patented Case
View Patent ↗
Granted: Jul 7, 1992
Filed: Oct 25, 1991
Inventors
Arie Zask
Richard Coghlan
Assignee (at issue)
Amerimas Home Products, Inc.
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.