Granted Patent
Utility
US 6,446,465 · App. 09/951,725
Liquefaction process and apparatus
Inventor:
Christopher A. T. Dubar
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Sep 14, 2001
Inventor
Christopher A. T. Dubar
Assignee (at issue)
BHP Petroleum PTY, Ltd.
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.