Granted Patent
Utility
US 6,629,068 · App. 09/416,228
Calculating a postfilter frequency response for filtering digitally processed speech
Inventors:
Jacek Horos, Alistair Black
Patented Case
View Patent ↗
Granted: Sep 30, 2003
Filed: Oct 12, 1999
Inventors
Jacek Horos
Alistair Black
Assignee (at issue)
Nokia Mobile Phones Ltd.
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.