Granted Patent
Utility
US 6,141,387 · App. 09/044,769
Digital QAM modulator using post filtering carrier recombination
Inventor:
Qin Zhang
Patented Case
View Patent ↗
Granted: Oct 31, 2000
Filed: Mar 19, 1998
Inventor
Qin Zhang
Assignees (at issue)
Motorola, Inc.
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.