Granted Patent
Utility
US 6,819,948 · App. 10/617,389
Superconducting tapes
Inventor:
Rupeng Zhao
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: Jul 11, 2003
Inventor
Rupeng Zhao
Assignee (at issue)
Metal Manufactures Limited
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.