Granted Patent
Utility
US 4,894,455 · App. 07/016,083
Pharmaceutically active zinc complexes
Inventors:
Robert C. Hider, George Kontoghiorghes, Jack Silver, Michael A. Stockham
Patented Case
View Patent ↗
Granted: Jan 16, 1990
Filed: Feb 18, 1987
Inventors
Robert C. Hider
George Kontoghiorghes
Jack Silver
Michael A. Stockham
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT CORPORATION
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.