Yonghua Fang

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Ottawa, CA

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Patents Grantslast 30 patents

Information Patent Grant
System for conditioning echo response of loop start trunk line
- Patent number 8,654,967
- Issue date Feb 18, 2014
- Mitel Networks Corporation
- Dieter Schulz
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for selecting impedance setting for loop start trunk line
- Patent number 7,738,653
- Issue date Jun 15, 2010
- Mitel Networks Corporation
- Yonghua Fang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of measuring distortion and determining residue-echo thresho...
- Patent number 7,693,276
- Issue date Apr 6, 2010
- Mitel Networks Corporation
- Yonghua Fang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of selecting impedance setting for loop start trunk line
- Patent number 7,215,762
- Issue date May 8, 2007
- Mitel Networks Corporation
- Yonghua Fang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
SYSTEM FOR CONDITIONING ECHO RESPONSE OF LOOP START TRUNK LINE
- Publication number 20070133786
- Publication date Jun 14, 2007
- MITEL NETWORKS CORPORATION
- Dieter Schulz
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD FOR SELECTING IMPEDANCE SETTING FOR LOOP START TRUNK LINE
- Publication number 20070127697
- Publication date Jun 7, 2007
- Mitel Networks Corporation
- Yonghua Fang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method of measuring distortion and determining residue-echo thresho...
- Publication number 20060198329
- Publication date Sep 7, 2006
- MITEL NETWORKS CORPORATION
- Yonghua Fang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method of selecting impedance setting for loop start trunk line
- Publication number 20050207565
- Publication date Sep 22, 2005
- Mitel Networks Corporation
- Yonghua Fang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE