Granted Patent
Utility
US 5,777,561 · App. 08/720,598
Method of grouping RF transponders
Inventors:
Trieu C. Chieu, Thomas Anthony Cofino, Harley Heinrich, Paul Jorge Sousa, Li-Cheng Richard Zai
Patented Case
View Patent ↗
Granted: Jul 7, 1998
Filed: Sep 30, 1996
Inventors
Trieu C. Chieu
Thomas Anthony Cofino
Harley Heinrich
Paul Jorge Sousa
Li-Cheng Richard Zai
Assignee (at issue)
International Business Machines 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.