Granted Patent
Utility
US 5,980,912 · App. 08/823,143
Chitosan induced immunopotentiation
Inventors:
Joseph S. Podolski, Mitzi L. Martinez
Patented Case
View Patent ↗
Granted: Nov 9, 1999
Filed: Mar 25, 1997
Inventors
Joseph S. Podolski
Mitzi L. Martinez
Assignee (at issue)
Zonagen, 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.