Granted Patent
Utility
US 6,125,656 · App. 09/432,214
Cryogenic rectification method for producing nitrogen gas and liquid nitrogen
Inventors:
Bayram Arman, Dante Patrick Bonaquist, Joseph Alfred Weber, John H. Ziemer, Arun Acharya, Mohannad Abdul-Aziz Rashad
Patented Case
View Patent ↗
Granted: Oct 3, 2000
Filed: Nov 3, 1999
Inventors
Bayram Arman
Dante Patrick Bonaquist
Joseph Alfred Weber
John H. Ziemer
Arun Acharya
Mohannad 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.