IP Library › Granted Patent US 6,282,286
Granted Patent Utility
US 6,282,286 · App. 09/143,973

Nonlinear processor for acoustic echo canceller with background noise preservation and long echo tail suppression

Inventors: Gordon J. Reesor, Gary Q. Jin, Thomas Qian
Patented Case View Patent ↗
Granted: Aug 28, 2001 Filed: Aug 31, 1998
Inventors
Gordon J. Reesor
Gary Q. Jin
Thomas Qian
Assignee (at issue)
Mitel 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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 6,282,286
App. No.
09/143,973
Filed
1998-08-31
Granted
2001-08-28
Kind
A