Granted Patent
Utility
US 5,475,984 · App. 08/298,231
Method and apparatus for producing frozen particles using an entrapment zone of atomized cryogenic liquid droplets
Inventors:
Nicholas R. Fermani, Mark G. Fletcher
Patented Case
View Patent ↗
Granted: Dec 19, 1995
Filed: Aug 29, 1994
Inventors
Nicholas R. Fermani
Mark G. Fletcher
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
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.