Granted Patent
Utility
US 5,843,347 · App. 08/906,004
Extrusion and freeze-drying method for preparing particles containing an active ingredient
Inventors:
Thanh-Tam Nguyen, Joelle Jacquot-Leyder
Patented Case
View Patent ↗
Granted: Dec 1, 1998
Filed: Aug 4, 1997
Inventors
Thanh-Tam Nguyen
Joelle Jacquot-Leyder
Assignee (at issue)
Laboratoire L. Lafon
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.