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WUXI SEAMLESS OIL PIPE CO LTD

Overview
  • Total Patents
    90
  • GoodIP Patent Rank
    186,470
  • Filing trend
    ⇧ 100.0%
About

WUXI SEAMLESS OIL PIPE CO LTD has a total of 90 patent applications. It increased the IP activity by 100.0%. Its first patent ever was published in 2005. It filed its patents most often in China. Its main competitors in its focus markets civil engineering and environmental technology are ANDERS EDWARD O, ANDREEV VLADIMIR and WANG CHENGJUN.

Patent filings in countries

World map showing WUXI SEAMLESS OIL PIPE CO LTDs patent filings in countries
# Country Total Patents
#1 China 90

Patent filings per year

Chart showing WUXI SEAMLESS OIL PIPE CO LTDs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Yan Yongjun 20
#2 Feng Bo 18
#3 Geng Yujuan 18
#4 Zhu Jianguo 18
#5 Xu Wen 16
#6 Chen Jie 15
#7 Bo Feng 13
#8 Yujuan Geng 10
#9 Jianping Song 9
#10 Yi Zhang 7

Latest patents

Publication Filing date Title
CN108716369A A kind of casing thread connection of multi-sealed hook-type screw thread
CN108843254A A kind of oil pipe threaded connector with multi-sealed face screw thread positive-angle
CN108756770A A kind of oil pipe threaded connector of multi-sealed hook-type screw thread
CN108868658A A kind of casing thread connection with multi-sealed face screw thread positive-angle
CN107448154A A kind of air-tight seal screw joint
CN107355185A A kind of antitorque joint of double step
CN103769694A Method for solving problem of occurring of steps when threads are processed through double cutters
CN103667954A Technology for quenching and tempering of C110 steel grade oil well tube by using Cr-Mo series steel
CN103362457A Cambered surface and plane sealed variable tooth wide wedge-type coupling structure and oil well pipe structure
CN103362458A Multi-plane sealing tooth-width-changing wedge type coupling structure and oil well pipe structure
CN103362450A Non-coupling multi-sealing tooth-width-variable wedge type threaded oil well pipe structure
CN103362451A Non-coupling good-sealing bending-resistant tooth-width-variable wedge type threaded oil well pipe structure
CN103362455A Bending-resistant high-sealing variable-tooth-width wedge type coupling structure and oil well pipe structure
CN103362453A Sealing variable-tooth-width wedge type coupling structure and oil well pipe structure
CN103362456A Leakage-proof high-seal tooth-width-changing wedge type coupling structure and oil well pipe structure
CN103362459A Arc-shaped conical surface sealed variable tooth wide wedge-type coupling structure and oil well pipe structure
CN103394774A Method for repairing small standoff during on-line oil sleeve external thread production
CN103321585A S-shaped shoulder variable tooth width wedge-shaped coupling structure and oil well pipe structure
CN103321591A Plane-shoulder type variable-tooth-width wedge-type coupling structure and oil well pipe structure
CN103321586A Curved-surface ledge flat-cone-shaped sealing-surface tooth-change wide-wedge-shaped coupling structure and oil well pipe structure