Granted Patent
Utility
US 6,132,823 · App. 08/957,148
Superconducting heat transfer medium
Inventor:
Yuzhi Qu
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Oct 24, 1997
Inventor
Yuzhi Qu
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.