Granted Patent
Utility
US 4,659,700 · App. 06/585,714
Chitosan-glycerol-water gel
Inventor:
David Jackson
Patented Case
View Patent ↗
Granted: Apr 21, 1987
Filed: Mar 2, 1984
Inventor
David Jackson
Assignee (at issue)
Johnson & Johnson 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.