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ZHANJIANG BRANCH OF CHINA NAT OFFSHORE OIL CORPORATION

Overview
  • Total Patents
    51
  • GoodIP Patent Rank
    29,317
  • Filing trend
    ⇧ 566.0%
About

ZHANJIANG BRANCH OF CHINA NAT OFFSHORE OIL CORPORATION has a total of 51 patent applications. It increased the IP activity by 566.0%. Its first patent ever was published in 2017. It filed its patents most often in China. Its main competitors in its focus markets civil engineering, measurement and basic materials chemistry are BAKER HUGHES HOLDINGS LLC, HALLIBURTON ENERGY SERVICES INC and HALLIBURTON ENERGY SERVICES INC..

Patent filings in countries

World map showing ZHANJIANG BRANCH OF CHINA NAT OFFSHORE OIL CORPORATIONs patent filings in countries
# Country Total Patents
#1 China 51

Patent filings per year

Chart showing ZHANJIANG BRANCH OF CHINA NAT OFFSHORE OIL CORPORATIONs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Li Zhong 22
#2 Li Yanjun 17
#3 Guo Yongbin 13
#4 Meng Wenbo 13
#5 Wang Erjun 13
#6 Ren Guanlong 13
#7 Luo Ming 13
#8 Dong Zhao 12
#9 Zhang Chong 11
#10 Liu Hexing 10

Latest patents

Publication Filing date Title
CN112104580A Sparse underwater acoustic channel estimation method based on generalized approximate message transfer-sparse Bayesian learning
CN111852410A Offshore gas well multi-production-channel well completion pipe string structure and well completion process method
CN111718149A Oil well cement low-viscosity thixotropic agent and preparation method thereof
CN111749659A Method for preventing and controlling hydrate in deep water gas field shaft
CN111783297A Deepwater exploratory well casing strength checking method considering APB effect
CN111505719A Diffracted multiple suppression method based on wave field decomposition
CN111706308A Gas flow monitoring simulation device and method in porous medium containing methane hydrate
CN111691855A Simulation device and method for joint production of conventional natural gas reservoir and methane hydrate reservoir
CN111691856A Device and method for simulating influence of overlying and marginal low water layers on methane hydrate exploitation
CN111454032A Toughening expanding agent for well cementation cement slurry and tough micro-expansion cement slurry system
CN111087514A Super-hydrophobic ultralow-density high-strength polystyrene microsphere and preparation method thereof
CN111193572A Formation test data transmission method, electronic device and computer readable storage medium
CN111101933A Channel self-adaptive drilling communication relay nipple, drill string and frequency self-adaptive regulator
CN111119866A Remote transmission short joint with cable
CN110954460A Large-size sandstone target perforation flow efficiency testing device
CN110685664A Experimental device and method for testing influence of extension of pipe column on gas liquid carrying efficiency
CN110734754A Plugging agent composition, plugging agent, preparation method and application thereof
CN110374528A ECD drilling well liquid jetting device is reduced in a kind of deepwater drilling
CN110259419A Concentric screen and attaching method thereof
CN110318713A Device for filling and its placement method