Granted Patent
Utility
US 4,968,664 · App. 07/391,422
Single-crystal wafer having a superconductive ceramic thin film formed thereon
Inventors:
Tadashi Sugihara, Takuo Takeshita
Patented Case
View Patent ↗
Granted: Nov 6, 1990
Filed: Aug 9, 1989
Inventors
Tadashi Sugihara
Takuo Takeshita
Assignee (at issue)
Mitsubishi Metal Corporation
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.