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HANGZHOU DACHAO PETROCHEMICAL EQUIPMENT CO LTD

Overview
  • Total Patents
    20
  • GoodIP Patent Rank
    176,410
  • Filing trend
    ⇩ 100.0%
About

HANGZHOU DACHAO PETROCHEMICAL EQUIPMENT CO LTD has a total of 20 patent applications. It decreased 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 engines, pumps and turbines are STERN WILHELM, UNIHOLD GROUP LIMITED and AMERICAN HYDRAULIC PROPULSION.

Patent filings in countries

World map showing HANGZHOU DACHAO PETROCHEMICAL EQUIPMENT CO LTDs patent filings in countries
# Country Total Patents
#1 China 20

Patent filings per year

Chart showing HANGZHOU DACHAO PETROCHEMICAL EQUIPMENT CO LTDs patent filings per year from 1900 to 2020

Focus industries

Focus technologies

# Technology
#1 Pumps

Top inventors

# Name Total Patents
#1 Yang Shudong 12
#2 Shudong Yang 8
#3 Wang Min 2
#4 Lin Zhenhai 1

Latest patents

Publication Filing date Title
CN106968940A A kind of fluid end structure of diaphragm easy to assemble for hydraulic reciprocating diaphragm pump
CN107044407A The positioning pressure relief system based on diaphragm deflection deformation of hydraulic reciprocating diaphragm pump
CN105332900A Hydraulic diaphragm pump with oblique-pulling controllable oil filling structure
CN105065238A Hydraulic diaphragm reciprocating pump with flip-type diaphragm protecting plate
CN104922757A Double-acting pneumatic miniature infusion pump
CN103821701A Hydraulic diaphragm reciprocating pump built-in controllable oil supplying structure
CN103835928A External controllable oil supply structure of hydraulic reciprocating diaphragm pump
CN103835927A Diaphragm reciprocating booster pump with external circulating hydraulic type plunger damping structure
CN103511245A Check valve structure capable of being rapidly disassembled and assembled
CN103511229A Pump head integrated installing structure of diaphragm type reciprocation pump
CN102758754A Simplified hydraulic end structure of tubular diaphragm metering pump
CN102755845A Jet flow water film adhering preventing mixing device
CN102759287A Double-effect cooler
CN102758771A Multi-curved surface diaphragm protective plate
CN102758769A Direct-coupled double-acting stroke adjusting device used in reciprocating metering pump
CN102108961A Hydraulic end structure of hydraulic diaphragm-type reciprocating pump capable of replacing diaphragm rapidly
CN102080651A Long-acting no-leakage plunger sealing structure for plunger type measuring pump
CN101713398A Pump head combination valve for reciprocating pump
CN101705934A Simplified hydraulic reciprocating diaphragm pump
CN1724868A Internal circulation pressure balance ultra high pressure hydralic diaphram type metering pump