Granted Patent
Utility
US 6,465,626 · App. 09/341,546
Pharmaceutical compositions of chitosan with type-A gelatin
Inventors:
Peter Watts, Lisbeth Illum
Patented Case
View Patent ↗
Granted: Oct 15, 2002
Filed: Aug 18, 1999
Inventors
Peter Watts
Lisbeth Illum
Assignee (at issue)
West Pharmaceutical Services Drug Delivery and Clinical Research Center Limited
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.