Granted Patent
Utility
US 5,406,509 · App. 08/046,249
Electrically erasable, directly overwritable, multibit single cell memory elements and arrays fabricated therefrom
Inventors:
Stanford R. Ovshinsky, Qiuyi Ye, David Strand, Wolodymyr Czubatyj
Patented Case
View Patent ↗
Granted: Apr 11, 1995
Filed: Apr 12, 1993
Inventors
Stanford R. Ovshinsky
Qiuyi Ye
David Strand
Wolodymyr Czubatyj
Assignee (at issue)
Energy Conversion Devices, Inc.
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.