Qing Chang

Person

Zhuhai, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Method and system for operating key and lock core with wireless cha...
- Patent number 11,686,124
- Issue date Jun 27, 2023
- Zhuhai Unitech Power Technology Co., Ltd.
- Qing Chang
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method and system for controlling a smart lock
- Patent number 11,189,117
- Issue date Nov 30, 2021
- Zhuhai Unitech Power Technology Co., Ltd.
- Qing Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Stereophonic sound recording method and apparatus, and terminal
- Patent number 9,967,691
- Issue date May 8, 2018
- Huawei Technologies Co., Ltd.
- Li Liu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Sound processing method and terminal device
- Patent number 9,858,916
- Issue date Jan 2, 2018
- Huawei Device (Dongguan) Co., Ltd.
- Kang An
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Method and system for upgrading software
- Patent number 9,043,778
- Issue date May 26, 2015
- Tencent Technology (Shenzhen) Company Limited
- Yehui Lin
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Smart interlock system and working method thereof
- Patent number 8,928,457
- Issue date Jan 6, 2015
- Zhuhai Unitech Power Technology Co., Ltd.
- Shuqiang Jin
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Interchangeable lock core and opening method thereof
- Patent number 8,890,651
- Issue date Nov 18, 2014
- Youtech, Inc.
- Shuqiang Jin
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Method for managing an application and application platform
- Patent number 8,850,422
- Issue date Sep 30, 2014
- Tencent Technology (Shenzhen) Company Ltd.
- Qing Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
POWERTRAIN, CONTROL APPARATUS AND MOTOR CONTROL UNIT
- Publication number 20240317236
- Publication date Sep 26, 2024
- Huawei Digital Power Technologies Co., Ltd.
- Zhengyi TANG
- B60 - VEHICLES IN GENERAL
Information Patent Application
Sound Collecting Method, Electronic Device, and System
- Publication number 20240064449
- Publication date Feb 22, 2024
- Huawei Technologies Co., Ltd
- Kai Tao
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Audio Processing Method, Apparatus, and System
- Publication number 20230147435
- Publication date May 11, 2023
- Huawei Technologies Co., Ltd
- Mingjie Yin
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND SYSTEM FOR CONTROLLING A SMART LOCK
- Publication number 20220084337
- Publication date Mar 17, 2022
- Zhuhai Unitech Power Technology Co., Ltd.
- Qing Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Voice Control Method, Wearable Device, and Terminal
- Publication number 20210256979
- Publication date Aug 19, 2021
- Huawei Technologies Co., Ltd
- Long Zhang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
METHOD AND SYSTEM FOR OPERATING KEY AND LOCK CORE WITH WIRELESS CHA...
- Publication number 20200240174
- Publication date Jul 30, 2020
- Zhuhai Unitech Power Technology Co., Ltd.
- Qing Chang
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
METHOD AND SYSTEM FOR CONTROLLING A SMART LOCK
- Publication number 20200242863
- Publication date Jul 30, 2020
- Zhuhai Unitech Power Technology Co., Ltd.
- Qing Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DIRECTIONAL RECORDING METHOD AND APPARATUS, AND RECORDING DEVICE
- Publication number 20180156887
- Publication date Jun 7, 2018
- HUAWEI TECHNOLOGIES CO., LTD.
- Cunshou QIU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Stereophonic Sound Recording Method and Apparatus, and Terminal
- Publication number 20160183026
- Publication date Jun 23, 2016
- Huawei Technologies Co., Ltd
- Li Liu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Sound Processing Method And Terminal Device
- Publication number 20160133245
- Publication date May 12, 2016
- HUAWEI DEVICE CO., LTD.
- Kang An
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
METHOD AND SYSTEM FOR UPGRADING SOFTWARE
- Publication number 20140304697
- Publication date Oct 9, 2014
- TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
- Yehui Lin
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Method for Managing an Application and Application Platform
- Publication number 20140101654
- Publication date Apr 10, 2014
- Tencent Technology (Shenzhen) Company Ltd.
- Qing Chang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
INSTANT MESSENGER AND METHOD FOR PERFORMING CONVENIENT SEARCH BY IN...
- Publication number 20130073661
- Publication date Mar 21, 2013
- Tencent Technology (Shenzhen) Company Limited
- Qing CHANG
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
INTERCHANGEABLE LOCK CORE AND OPENING METHOD THEREOF
- Publication number 20130024038
- Publication date Jan 24, 2013
- YOUTECH, INC.
- Shuqiang Jin
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Person

Patents Grantslast 30 patents

Method and system for operating key and lock core with wireless cha...

Method and system for controlling a smart lock

Stereophonic sound recording method and apparatus, and terminal

Sound processing method and terminal device

Method and system for upgrading software

Smart interlock system and working method thereof

Interchangeable lock core and opening method thereof

Method for managing an application and application platform

Patents Applicationslast 30 patents

POWERTRAIN, CONTROL APPARATUS AND MOTOR CONTROL UNIT

Sound Collecting Method, Electronic Device, and System

Audio Processing Method, Apparatus, and System

METHOD AND SYSTEM FOR CONTROLLING A SMART LOCK

Voice Control Method, Wearable Device, and Terminal

METHOD AND SYSTEM FOR OPERATING KEY AND LOCK CORE WITH WIRELESS CHA...

METHOD AND SYSTEM FOR CONTROLLING A SMART LOCK

DIRECTIONAL RECORDING METHOD AND APPARATUS, AND RECORDING DEVICE

Stereophonic Sound Recording Method and Apparatus, and Terminal

Sound Processing Method And Terminal Device

METHOD AND SYSTEM FOR UPGRADING SOFTWARE

Method for Managing an Application and Application Platform

INSTANT MESSENGER AND METHOD FOR PERFORMING CONVENIENT SEARCH BY IN...

INTERCHANGEABLE LOCK CORE AND OPENING METHOD THEREOF