Yi Hai ZHANG

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Ottawa, CA

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Patents Grantslast 30 patents

Information Patent Grant
Reliability of VoLTE/ViLTE calls
- Patent number 10,506,540
- Issue date Dec 10, 2019
- BlackBerry Limited
- Muhammad Khaledul Islam
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for selecting a cellular network
- Patent number 10,165,485
- Issue date Dec 25, 2018
- BlackBerry Limited
- Jeffrey William Wirtanen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Reliability of VoLTE/ViLTE calls
- Patent number 10,009,865
- Issue date Jun 26, 2018
- BlackBerry Limited
- Muhammad Khaledul Islam
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for selecting a cellular network
- Patent number 9,942,816
- Issue date Apr 10, 2018
- BlackBerry Limited
- Jeffrey William Wirtanen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
RELIABILITY OF VoLTE/ViLTE CALLS
- Publication number 20180310270
- Publication date Oct 25, 2018
- BlackBerry Limited
- Muhammad Khaledul ISLAM
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD FOR SELECTING A CELLULAR NETWORK
- Publication number 20180152872
- Publication date May 31, 2018
- BlackBerry Limited
- Jeffrey William WIRTANEN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
RELIABILITY OF VoLTE/ViLTE CALLS
- Publication number 20170374635
- Publication date Dec 28, 2017
- BlackBerry Limited
- Muhammad Khaledul ISLAM
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD FOR SELECTING A CELLULAR NETWORK
- Publication number 20160157150
- Publication date Jun 2, 2016
- BlackBerry Limited
- Jeffrey William WIRTANEN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE