Granted Patent
Utility
US 5,937,009 · App. 08/784,849
Sub-band echo canceller using optimum wavelet packets and cross-band cancellation
Inventors:
Kon Max Wong, Qu Gary Jin, Qiang Wu, Phillippe Wu, Gordon J. Reesor
Patented Case
View Patent ↗
Granted: Aug 10, 1999
Filed: Jan 15, 1997
Inventors
Kon Max Wong
Qu Gary Jin
Qiang Wu
Phillippe Wu
Gordon J. Reesor
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.