Granted Patent
Utility
US 5,896,421 · App. 08/721,786
Use of low pass filter and equalizer for noise reduction in direct up-conversion schemes
Inventors:
Hassan Zamat, Kumud Patel, Brian K. Fair
Patented Case
View Patent ↗
Granted: Apr 20, 1999
Filed: Sep 25, 1996
Inventors
Hassan Zamat
Kumud Patel
Brian K. Fair
Assignee (at issue)
HUGHES ELECTRONICS LIMITED
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.