Granted Patent
Utility
US 5,696,307 · App. 08/184,810
Hydrofluoroalkanes as cleaning and degreasing solvents
Inventors:
Michael Van Der Puy, Rajat S. Basu, David Nalewajek, Lois Anne Short Ellis
Patented Case
View Patent ↗
Granted: Dec 9, 1997
Filed: Jan 21, 1994
Inventors
Michael Van Der Puy
Rajat S. Basu
David Nalewajek
Lois Anne Short Ellis
Assignee (at issue)
AlliedSignal, 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.