Granted Patent
Utility
US 6,668,554 · App. 09/393,397
Geothermal energy production with supercritical fluids
Inventor:
Donald W. Brown
Patented Case
View Patent ↗
Granted: Dec 30, 2003
Filed: Sep 10, 1999
Inventor
Donald W. Brown
Assignee (at issue)
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
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.