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HAIAN HUADA PETROLEUM DEVICES CO LTD

Overview
  • Total Patents
    30
  • GoodIP Patent Rank
    55,517
  • Filing trend
    ⇩ 20.0%
About

HAIAN HUADA PETROLEUM DEVICES CO LTD has a total of 30 patent applications. It decreased the IP activity by 20.0%. Its first patent ever was published in 2011. It filed its patents most often in China. Its main competitors in its focus markets measurement, chemical engineering and basic materials chemistry are LEEDS & NORTHRUP SPA, CHEMLAB MFG LTD and THERMO ELECTRON SPA.

Patent filings in countries

World map showing HAIAN HUADA PETROLEUM DEVICES CO LTDs patent filings in countries
# Country Total Patents
#1 China 30

Patent filings per year

Chart showing HAIAN HUADA PETROLEUM DEVICES CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Ma Fengming 22
#2 Wu Jinfu 10
#3 Tu Yong 10
#4 Chen Jian 5
#5 Qian Rushu 3
#6 Ming Majian 2
#7 Ma Feng 2
#8 Liu Zhimei 1
#9 Qian Rongxing 1

Latest patents

Publication Filing date Title
CN110251978A A kind of supercritical extract liquid fractionation kettle
CN110219767A A kind of tidal-energy electric generator set
CN110261425A A kind of visualization high pressure property condensation analytical equipment
CN110025977A A kind of method and apparatus for extracting Radix Notoginseng with supercritical carbon dioxide
CN110025981A A kind of supercritical system extracted based on carbon dioxide
CN110057418A A kind of gas continuous metering device
CN110028576A A method of leech is extracted with supercritical carbon dioxide
CN109372448A A kind of oil country tubular good above mentions stripping attachment
CN108657673A A kind of petroleum gas storage tank
CN108317330A A kind of heat dissipation type high petroleum collection pipeline
CN108506590A A kind of high intensity material saving type oil feed pipe
CN107899267A Means of supercritical extraction equipment equipped with quick-opening device
CN107488438A A kind of oil instrument rare earth lapping liquid
CN107488414A A kind of oil instrument polishing grinding liquid
CN107755318A A kind of oil instrument cleaning plant
CN107552483A A kind of oil instrument ultrasonic cleaning equipment
CN106370579A Gas permeability determinator
CN106404498A Vacuumizing and pressurizing saturation apparatus
CN106383077A Device for producing bound water
CN106290353A A kind of full-automatic COD analyser