Granted Patent
Utility
US 6,494,054 · App. 09/930,166
Multicomponent refrigeration fluid refrigeration system with auxiliary ammonia cascade circuit
Inventors:
Kenneth Kai Wong, Boris Yudin, Dante Patrick Bonaquist, Mohammad Abdul-Aziz Rashad
Patented Case
View Patent ↗
Granted: Dec 17, 2002
Filed: Aug 16, 2001
Inventors
Kenneth Kai Wong
Boris Yudin
Dante Patrick Bonaquist
Mohammad Abdul-Aziz Rashad
Assignee (at issue)
Praxair Technology, 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.