Granted Patent
Utility
US 4,790,955 · App. 06/685,871
Azeotrope-like compositions of trichlorotrifluoroethane, acetone, nitromethane and hexane
Inventors:
Earl E. A. Lund, David P. Wilson, Rajat S. Basu, Hang T. Pham
Patented Case
View Patent ↗
Granted: Dec 13, 1988
Filed: Dec 24, 1984
Inventors
Earl E. A. Lund
David P. Wilson
Rajat S. Basu
Hang T. Pham
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.