Granted Patent
Utility
US 4,933,898 · App. 07/297,472
Secure integrated circuit chip with conductive shield
Inventors:
Robert C. Gilberg, Richard M. Knowles, Paul Moroney, William A. Shumate
Patented Case
View Patent ↗
Granted: Jun 12, 1990
Filed: Jan 12, 1989
Inventors
Robert C. Gilberg
Richard M. Knowles
Paul Moroney
William A. Shumate
Assignee (at issue)
General Instrument 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.