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SUZHOU DOUSON DRILLING & PROD EQUIPMENT CO LTD

Overview
  • Total Patents
    31
  • GoodIP Patent Rank
    68,367
  • Filing trend
    ⇧ 100.0%
About

SUZHOU DOUSON DRILLING & PROD EQUIPMENT CO LTD has a total of 31 patent applications. It increased the IP activity by 100.0%. Its first patent ever was published in 2012. It filed its patents most often in China. Its main competitors in its focus markets mechanical elements, machine tools and civil engineering are JIANGSU HONGTAI PETROCHEMICAL MACHINERY CO LTD, PIPE TRANSF LTD and CACTUS WELLHEAD LLC.

Patent filings in countries

World map showing SUZHOU DOUSON DRILLING & PROD EQUIPMENT CO LTDs patent filings in countries
# Country Total Patents
#1 China 31

Patent filings per year

Chart showing SUZHOU DOUSON DRILLING & PROD EQUIPMENT CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Zou Liming 16
#2 Zhuang Huitao 14
#3 Li Shulin 10
#4 Shu Zhigao 9
#5 Zhou Ming 8
#6 Qiu Weibin 6
#7 Tan Ping 6
#8 Zhao Feng 4
#9 Yin Enlai 4
#10 Sun Xiaoying 4

Latest patents

Publication Filing date Title
CN111271480A Underwater chemical agent injection valve
CN111249809A High-efficient multi-functional degritting separator
CN111305819A Multifunctional composite type petroleum drilling and production equipment test board
CN110306962A Fracturing unit super-pressure pressure relief device
CN108678705A A kind of underwater clamping hoop type connector
CN108518507A A kind of multifunction combined pressure break tree
CN108488405A A kind of built-in reducing sealing extra large cable slide valve of cylinder body
CN108397439A A kind of movement of cylinder block type fluid pressure drive device
CN106764009A A kind of choke valve
CN106763932A A kind of non-return valve
CN105972302A Valve rod with detachable sealing sleeve
CN105546132A Full-closed sealed type orifice plate throttle valve
CN105697704A Screw rod transmission mechanism changeable in rotation speed and torque
CN105546254A Quick-connection hydraulic joint for underwater pipe converging and pipe control
CN105064944A Double-hydraulic operation window with adjustable operation space
CN104514934A Underwater spherical flange connector for connecting submarine pipe
CN104607338A Tool system for revolved body part end face spraying treatment
CN104493565A Fixing tool for nonferromagnetic ring part
CN105710460A Whole thread tooth starting method
CN104308800A Rod pressing tooling for assembling valves