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Patents Grants
last 30 patents
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Patent Grant
Surveillance device
Patent number
11,860,516
Issue date
Jan 2, 2024
ZHEJIANG DAHUA TECHNOLOGY CO., LTD
Liyun Zheng
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Surveillance device
Patent number
11,835,847
Issue date
Dec 5, 2023
ZHEJIANG DAHUA TECHNOLOGY CO., LTD
Liyun Zheng
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method and apparatus for video patrol
Patent number
11,138,846
Issue date
Oct 5, 2021
HANGZHOU HIKVISION SYSTEM TECHNOLOGY CO., LTD.
Haiyang Jiang
G08 - SIGNALLING
Information
Patent Grant
Surveillance device
Patent number
11,092,883
Issue date
Aug 17, 2021
ZHEJIANG DAHUA TECHNOLOGY CO., LTD
Liyun Zheng
G01 - MEASURING TESTING
Patents Applications
last 30 patents
Information
Patent Application
SURVEILLANCE DEVICE
Publication number
20210364898
Publication date
Nov 25, 2021
Zhejiang Dahua Technology CO., LTD.
Liyun ZHENG
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
SURVEILLANCE DEVICE
Publication number
20210364897
Publication date
Nov 25, 2021
Zhejiang Dahua Technology CO., LTD.
Liyun ZHENG
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
SURVEILLANCE DEVICE
Publication number
20200225562
Publication date
Jul 16, 2020
Zhejiang Dahua Technology CO., LTD.
Liyun ZHENG
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
METHOD AND APPARATUS FOR VIDEO PATROL
Publication number
20190325720
Publication date
Oct 24, 2019
HANGZHOU HIKVISION SYSTEM TECHNOLOGY CO., LTD.
Haiyang JIANG
G08 - SIGNALLING