David Ma

Person

Kanata, CA

People

Patents Grantslast 30 patents

Information Patent Grant
Method and system for data session establishment
- Patent number 9,749,330
- Issue date Aug 29, 2017
- BlackBerry Limited
- David Po-Hwa Ma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system for data session establishment
- Patent number 9,131,379
- Issue date Sep 8, 2015
- BlackBerry Limited
- David Po-Hwa Ma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for dynamically changing the monitoring of a c...
- Patent number 8,971,191
- Issue date Mar 3, 2015
- BlackBerry Limited
- Jin Kim
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system for data session establishment
- Patent number 8,843,112
- Issue date Sep 23, 2014
- BlackBerry Limited
- Asif Hossain
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system for handling QOS flows when moving between systems
- Patent number 8,638,752
- Issue date Jan 28, 2014
- BlackBerry Limited
- Jose Antonio Gomez Velez
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for controlling of receive diversity in an antenna system
- Patent number 8,626,109
- Issue date Jan 7, 2014
- BlackBerry Limited
- David Ma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method of data access for mobile stations
- Patent number 7,978,648
- Issue date Jul 12, 2011
- Research in Motion Limited
- Hossain Asif
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method of data access for mobile stations
- Patent number 7,756,075
- Issue date Jul 13, 2010
- Research in Motion Limited
- Asif Hossain
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Shock absorbent roller thumb wheel
- Patent number 7,304,254
- Issue date Dec 4, 2007
- Research In Motion Limited
- Dave M. Ma
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Shock absorbent roller thumb wheel
- Patent number 7,057,120
- Issue date Jun 6, 2006
- Research In Motion Limited
- Dave M. Ma
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Shock absorbent roller thumb wheel
- Patent number 6,828,518
- Issue date Dec 7, 2004
- Research In Motion Limited
- Dave M. Ma
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND SYSTEM FOR DATA SESSION ESTABLISHMENT
- Publication number 20160105440
- Publication date Apr 14, 2016
- BlackBerry Limited
- David Po-Hwa MA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND SYSTEM FOR DATA SESSION ESTBLISHMENT
- Publication number 20140370853
- Publication date Dec 18, 2014
- David Po-Hwa MA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND SYSTEM FOR DATA SESSION ESTABLISHMENT
- Publication number 20120003958
- Publication date Jan 5, 2012
- Research in Motion Limited
- Asif Hossain
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
System And Method Of Data Access For Mobile Stations
- Publication number 20110255476
- Publication date Oct 20, 2011
- Research in Motion Limited
- Asif Hossain
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND SYSTEM FOR HANDLING QOS FLOWS WHEN MOVING BETWEEN SYSTEMS
- Publication number 20110255507
- Publication date Oct 20, 2011
- Research in Motion Limited
- JOSE ANTONIO GOMEZ VELEZ
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD FOR CONTROLLING OF RECEIVE DIVERSITY IN AN ANTENNA SYSTEM
- Publication number 20110201295
- Publication date Aug 18, 2011
- Research in Motion Limited
- David MA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method And Apparatus For Dynamically Changing The Monitoring Of A C...
- Publication number 20110039529
- Publication date Feb 17, 2011
- Research in Motion Limited
- Jin Kim
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
System and Method of Data Access for Mobile Stations
- Publication number 20100254269
- Publication date Oct 7, 2010
- Research in Motion Limited
- Asif Hossain
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
System and method of data access for mobile stations
- Publication number 20070058578
- Publication date Mar 15, 2007
- Research In Motion Limited
- Asif Hossain
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Shock absorbent roller thumb wheel
- Publication number 20060207865
- Publication date Sep 21, 2006
- Dave M. Ma
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Shock absorbent roller thumb wheel
- Publication number 20050082148
- Publication date Apr 21, 2005
- Research In Motion Limited
- Dave M. Ma
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SHOCK ABSORBENT ROLLER THUMB WHEEL
- Publication number 20040200700
- Publication date Oct 14, 2004
- Dave M. Ma
- H01 - BASIC ELECTRIC ELEMENTS

Person

Patents Grantslast 30 patents

Method and system for data session establishment

Method and system for data session establishment

Method and apparatus for dynamically changing the monitoring of a c...

Method and system for data session establishment

Method and system for handling QOS flows when moving between systems

Method for controlling of receive diversity in an antenna system

System and method of data access for mobile stations

System and method of data access for mobile stations

Shock absorbent roller thumb wheel

Shock absorbent roller thumb wheel

Shock absorbent roller thumb wheel

Patents Applicationslast 30 patents

METHOD AND SYSTEM FOR DATA SESSION ESTABLISHMENT

METHOD AND SYSTEM FOR DATA SESSION ESTBLISHMENT

METHOD AND SYSTEM FOR DATA SESSION ESTABLISHMENT

System And Method Of Data Access For Mobile Stations

METHOD AND SYSTEM FOR HANDLING QOS FLOWS WHEN MOVING BETWEEN SYSTEMS

METHOD FOR CONTROLLING OF RECEIVE DIVERSITY IN AN ANTENNA SYSTEM

Method And Apparatus For Dynamically Changing The Monitoring Of A C...

System and Method of Data Access for Mobile Stations

System and method of data access for mobile stations

Shock absorbent roller thumb wheel

Shock absorbent roller thumb wheel

SHOCK ABSORBENT ROLLER THUMB WHEEL