Granted Patent
Utility
US 6,549,523 · App. 09/462,048
Background noise contrast reduction for handovers involving a change of speech codec
Inventors:
Jonathan A. Gibbs, David Pearce, Dominic Chan, Andrew Aftelak
Patented Case
View Patent ↗
Granted: Apr 15, 2003
Filed: Dec 30, 1999
Inventors
Jonathan A. Gibbs
David Pearce
Dominic Chan
Andrew Aftelak
Assignee (at issue)
Motorola, Inc.
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.