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Christopher M. Forrester
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Ottawa, CA
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Patents Grants
last 30 patents
Information
Patent Grant
Feedback enclosure and feedback system for a transducer of an elect...
Patent number
9,432,756
Issue date
Aug 30, 2016
BlackBerry Limited
Chris Forrester
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Back cavity microphone implementation
Patent number
9,432,762
Issue date
Aug 30, 2016
BlackBerry Limited
Andre John Van Schyndel
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Function selection by detecting resonant frequencies
Patent number
9,182,853
Issue date
Nov 10, 2015
BlackBerry Limited
Dietmar Frank Wennemer
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Methods and apparatus for improving audio quality using an acoustic...
Patent number
9,148,725
Issue date
Sep 29, 2015
BlackBerry Limited
Malay Gupta
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Using an auxiliary device sensor to facilitate disambiguation of de...
Patent number
9,131,041
Issue date
Sep 8, 2015
BlackBerry Limited
Brady Nicholas Laska
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Dual beamform audio echo reduction
Patent number
9,083,782
Issue date
Jul 14, 2015
BlackBerry Limited
Michael Tetelbaum
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus allowing for user-selectable acoustic equalize...
Patent number
8,473,011
Issue date
Jun 25, 2013
Research In Motion
Sean Bartholomew Simmons
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
System and method for adjusting an audio signal
Patent number
8,300,848
Issue date
Oct 30, 2012
Research in Motion Limited
Christopher Forrester
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Method and apparatus allowing for user-selectable acoustic equalize...
Patent number
7,877,116
Issue date
Jan 25, 2011
Research in Motion Limited
Sean Bartholomew Simmons
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
System and method for adjusting an audio signal
Patent number
7,574,010
Issue date
Aug 11, 2009
Research in Motion Limited
Christopher Forrester
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Voice-switching device and method for multiple receivers
Patent number
6,535,604
Issue date
Mar 18, 2003
Nortel Networks Limited
Paul Provencal
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Handset with a single transducer for handset and handsfree function...
Patent number
6,002,949
Issue date
Dec 14, 1999
Nortel Networks Corporation
Larry Edward Hawker
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
System and method for providing high terminal coupling loss in a ha...
Patent number
5,982,755
Issue date
Nov 9, 1999
Nortel Networks Corporation
Christopher Michael Forrester
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Wireless telephone handset
Patent number
5,828,965
Issue date
Oct 27, 1998
Northern Telecom Limited
Michael Brown
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communications terminal having a single transducer for handset and...
Patent number
5,790,679
Issue date
Aug 4, 1998
Northern Telecom Limited
Larry Edward Hawker
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Automatic sidetone selector
Patent number
5,398,282
Issue date
Mar 14, 1995
Northern Telecom Limited
Christopher M. Forrester
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
FEEDBACK ENCLOSURE AND FEEDBACK SYSTEM FOR A TRANSDUCER OF AN ELECT...
Publication number
20150195631
Publication date
Jul 9, 2015
BlackBerry Limited
Chris FORRESTER
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
BACK CAVITY MICROPHONE IMPLEMENTATION
Publication number
20150156580
Publication date
Jun 4, 2015
BlackBerry Limited
Andre John Van Schyndel
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Application
FUNCTION SELECTION BY DETECTING RESONANT FREQUENCIES
Publication number
20150062090
Publication date
Mar 5, 2015
BlackBerry Limited
Dietmar Frank Wennemar
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
AUDIO SIGNAL BANDWIDTH TO CODEC BANDWIDTH ANALYSIS AND RESPONSE
Publication number
20140369508
Publication date
Dec 18, 2014
Chris FORRESTER
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Application
DUAL BEAMFORM AUDIO ECHO REDUCTION
Publication number
20140335917
Publication date
Nov 13, 2014
Research in Motion Limited
Michael TETELBAUM
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Methods And Apparatus For Improving Audio Quality Using An Acoustic...
Publication number
20140235173
Publication date
Aug 21, 2014
BlackBerry Limited
Malay Gupta
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
USING AN AUXILIARY DEVICE SENSOR TO FACILITATE DISAMBIGUATION OF DE...
Publication number
20140112487
Publication date
Apr 24, 2014
Research in Motion Limited
Brady Nicholas LASKA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SYSTEM AND METHOD FOR ADJUSTING AN AUDIO SIGNAL
Publication number
20130003991
Publication date
Jan 3, 2013
Research In Motion Limited
Christopher Forrester
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Application
SYSTEM AND METHOD FOR ADJUSTING AN AUDIO SIGNAL
Publication number
20120245717
Publication date
Sep 27, 2012
Research In Motion Limited
Christopher FORRESTER
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHOD AND APPARATUS ALLOWING FOR USER-SELECTABLE ACOUSTIC EQUALIZE...
Publication number
20110086629
Publication date
Apr 14, 2011
Research in Motion Limited
Sean Bartholomew SIMMONS
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SYSTEM AND METHOD FOR ADJUSTING AN AUDIO SIGNAL
Publication number
20090276067
Publication date
Nov 5, 2009
Research In Motion Limited
Christopher FORRESTER
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
METHOD AND APPARATUS ALLOWING FOR USER-SELECTABLE ACOUSTIC EQUALIZE...
Publication number
20090061944
Publication date
Mar 5, 2009
Sean Bartholomew Simmons
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
System and method for adjusting an audio signal
Publication number
20050276425
Publication date
Dec 15, 2005
Christopher Forrester
H04 - ELECTRIC COMMUNICATION TECHNIQUE