John Chang JR.

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La Mirada, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
System and method to deliver companion experiences to handheld devices
- Patent number 11,405,966
- Issue date Aug 2, 2022
- AT&T Intellectual Property I, L.P.
- Barry A. Smith
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method to deliver companion experiences to handheld devices
- Patent number 10,834,764
- Issue date Nov 10, 2020
- AT&T Intellectual Property I, L.P.
- Barry A. Smith
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
SYSTEM AND METHOD TO DELIVER COMPANION EXPERIENCES TO HANDHELD DEVICES
- Publication number 20220322466
- Publication date Oct 6, 2022
- AT&T INTELLECTUAL PROPERTY I, L.P.
- Barry A. Smith
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SYSTEM AND METHOD TO DELIVER COMPANION EXPERIENCES TO HANDHELD DEVICES
- Publication number 20210029757
- Publication date Jan 28, 2021
- AT&T INTELLECTUAL PROPERTY I, L.P.
- Barry A. Smith
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SYSTEM AND METHOD TO DELIVER COMPANION EXPERIENCES TO HANDHELD DEVICES
- Publication number 20200187273
- Publication date Jun 11, 2020
- AT&T INTELLECTUAL PROPERTY I, L.P.
- Barry A. Smith
- H04 - ELECTRIC COMMUNICATION TECHNIQUE