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Dezhou united petroleum machinery co ltd

Overview
  • Total Patents
    12
  • GoodIP Patent Rank
    179,841
  • Filing trend
    ⇩ 100.0%
About

Dezhou united petroleum machinery co ltd has a total of 12 patent applications. It decreased 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 civil engineering are DEEP BLUE OIL & GAS LTD, WESTBAY INSTR LTD and HPI AS.

Patent filings in countries

World map showing Dezhou united petroleum machinery co ltds patent filings in countries
# Country Total Patents
#1 China 12

Patent filings per year

Chart showing Dezhou united petroleum machinery co ltds patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Civil engineering

Focus technologies

# Technology
#1 Earth drilling

Top inventors

# Name Total Patents
#1 Yu Weidong 5
#2 Zhao Zhenhua 3
#3 Yue Lin 3
#4 Sun Wei 3
#5 Wei Yue 3
#6 Wang Fan 3
#7 Yu Guanghai 3
#8 Yuan Lei 3
#9 Wang Dechen 3
#10 Pang Wenhuan 2

Latest patents

Publication Filing date Title
CN107143298A Oil well head annular space sealing device
CN105545207A Reaming screw drill tool for orientation
CN105092401A Screw rod drilling tool rotor cladding layer friction test device and screw rod drilling tool rotor cladding layer friction test method
CN104989291A Spline cardan shaft type screw drill
CN104863523A Ratchet type universal shaft for downhole power drill tool
CN104775758A Angle holding screw drilling tool for extended-reach directional well
CN104196470A Continuous-spinning assembly and disassembly frame and torque and rotation speed control method
CN103775498A Hard alloy transverse bearing body for spiral drilling rig and production method thereof
CN103245523A Combined vibration damper of screw drill complete machine test-bed and manufacturing method thereof
CN103256037A Working parameter measurement device for oil drilling positive displacement motors
CN103253839A Harmless reinjection treatment method for petroleum exploitation sludge
CN102798494A High-precision torque measurement device and method for petroleum pipeline dismounting frame