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DONGYING RUIFENG PETROLEUM TECH DEVELOPMENT CO LTD

Overview
  • Total Patents
    25
  • GoodIP Patent Rank
    64,502
  • Filing trend
    ⇧ 100.0%
About

DONGYING RUIFENG PETROLEUM TECH DEVELOPMENT CO LTD has a total of 25 patent applications. It increased the IP activity by 100.0%. 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 and engines, pumps and turbines are BECKER DRILLS LTD, WEATHERFORD NETHERLANDS B V and GETTE NICHOLAS PETER.

Patent filings in countries

World map showing DONGYING RUIFENG PETROLEUM TECH DEVELOPMENT CO LTDs patent filings in countries
# Country Total Patents
#1 China 25

Patent filings per year

Chart showing DONGYING RUIFENG PETROLEUM TECH DEVELOPMENT CO LTDs patent filings per year from 1900 to 2020

Focus industries

Focus technologies

Top inventors

# Name Total Patents
#1 Wu Hongxin 22
#2 Gu Hairui 20
#3 Kong Yang 15
#4 Yin Yuchao 15
#5 Su Yanlong 11
#6 Hou Hongyi 11
#7 Zhang Yutao 8
#8 Fan Xiao 6
#9 Liang Zuoyuan 6
#10 Shang Huazhen 3

Latest patents

Publication Filing date Title
CN112196478A Combined type safety joint
CN111927379A Bypass packer
CN111927408A Packing string and sand control completion method
CN112096338A Annular packing valve and well completion pipe string
CN111852386A Packer capable of bearing large torque, high temperature and high pressure
CN111980627A Oil extraction water control valve
CN111535780A Setting tool for preventing setting in advance and open hole suspension process for protecting packer
CN111075404A Two-stage sieve tube and tubular column
CN110671061A Safety joint and tubular column
CN110656907A Fishing spear and fishing device
CN110644947A Valve and tubular column
CN110644943A Packer and pipe column
CN110685648A Filling tool and well completion string
CN110685626A Packer setting tool and packer setting service pipe column
CN110630227A Running tool, layered oil production pipe column and layered oil production pipe column running method
CN110630566A Submersible pump canning system
CN110552667A Layered filling pipe column, layered water control pipe column and layered filling layered water control process
CN110454121A Screen casing and completion tubular column
CN110847863A Multi-runner bypass sieve tube
CN109372463A Static pressure type bypasses packer