Granted Patent
Utility
US 4,953,299 · App. 07/272,483
Process and apparatus for freeze-drying comprising means forming an active thermal shield between the freeze-drying shelves
Inventors:
Rene Gimeno, Alain Huc, Pierre Devictor
Patented Case
View Patent ↗
Granted: Sep 4, 1990
Filed: Nov 16, 1988
Inventors
Rene Gimeno
Alain Huc
Pierre Devictor
Assignee (at issue)
Bioetica, 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.