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Hangzhou, Zhejiang, CN
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Patents Grants
last 30 patents
Information
Patent Grant
Method and system of leak detecting for oil and gas pipeline based...
Patent number
12,085,483
Issue date
Sep 10, 2024
CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
Cuiwei Liu
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information
Patent Grant
Pressure compensation device with accumulator group for controlled...
Patent number
12,000,222
Issue date
Jun 4, 2024
CNPC BOHAI DRILING ENGINEERING COMPANY LIMITED
Jinshan Ma
G05 - CONTROLLING REGULATING
Information
Patent Grant
White balance adjustment method and apparatus, camera and medium
Patent number
11,323,677
Issue date
May 3, 2022
Hangzhou Hikvision Digital Technology Co., Ltd.
Renfu Tian
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for calculating a luminance value of a region...
Patent number
11,205,088
Issue date
Dec 21, 2021
Hangzhou Hikvision Digital Technology Co., Ltd.
Lei Chen
G06 - COMPUTING CALCULATING COUNTING
Patents Applications
last 30 patents
Information
Patent Application
PRESSURE COMPENSATION DEVICE WITH ACCUMULATOR GROUP FOR CONTROLLED...
Publication number
20230228162
Publication date
Jul 20, 2023
CNPC BOHAI DRILING ENGINEERING COMPANY LIMITED
Jinshan MA
E21 - EARTH DRILLING MINING
Information
Patent Application
METHOD AND SYSTEM OF LEAK DETECTING FOR OIL AND GAS PIPELINE BASED...
Publication number
20220397477
Publication date
Dec 15, 2022
CHINA UNIVERSITY OF PETROLEUM (EAST CHINA)
Cuiwei LIU
F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information
Patent Application
METHOD AND APPARATUS FOR CALCULATING A LUMINANCE VALUE OF A REGION...
Publication number
20210150251
Publication date
May 20, 2021
Hangzhou Hikvision Digital Technology Co., Ltd.
Lei CHEN
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
WHITE BALANCE ADJUSTMENT METHOD AND APPARATUS, CAMERA AND MEDIUM
Publication number
20200120321
Publication date
Apr 16, 2020
HANGZHOU HIKVISION DIGITAL TECHNOLOGY CO., LTD.
Renfu TIAN
H04 - ELECTRIC COMMUNICATION TECHNIQUE