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HAOHUA YUHANG CHEMICAL CO LTD

Overview
  • Total Patents
    20
  • GoodIP Patent Rank
    173,451
  • Filing trend
    ⇩ 100.0%
About

HAOHUA YUHANG CHEMICAL CO LTD has a total of 20 patent applications. It decreased the IP activity by 100.0%. Its first patent ever was published in 2008. It filed its patents most often in China. Its main competitors in its focus markets chemical engineering, materials and metallurgy and environmental technology are SCHNEIDER CHARLES A, GROTT GERALD J and BOXHOLMKONSULT AB.

Patent filings in countries

World map showing HAOHUA YUHANG CHEMICAL CO LTDs patent filings in countries
# Country Total Patents
#1 China 20

Patent filings per year

Chart showing HAOHUA YUHANG CHEMICAL CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Jiao Gaocheng 8
#2 Zhiyong Wang 6
#3 Songbo Wang 6
#4 Zhao Shubin 6
#5 Liu Juan 5
#6 Wei Chengjiang 5
#7 Wang Songbo 5
#8 Gaocheng Jiao 4
#9 Juan Liu 4
#10 Shubin Zhao 3

Latest patents

Publication Filing date Title
CN112275244A Device and method for replacing vinyl chloride polymerization kettle
CN110790287A Method for reducing content of aluminum ions in primary brine produced by ionic membrane caustic soda
CN110917999A Polymerization feeding optimization system and method
CN110684981A Method and system for reducing corrosion of steel water jacket and pipeline of hydrogen chloride synthetic furnace
CN107572558A The useless sodium hypochlorite of acetylene cleaning is used for primary brine deliming technique
CN106630073A Removal process of phosphorus in waste sodium hypochlorite solution generated during acetylene purification
CN105294895A Production method for improving heat stability of polyvinyl chloride resin
CN104445278A Process for recycling clean waste liquid of polyvinyl chloride produced by calcium carbide method to caustic soda primary brine
CN104192883A Method for preparing low-COD (chemical oxygen demand) calcium chloride solution
CN103601825A Anti-sticking method of polyvinyl chloride polymerization kettle
CN103601321A Operation and regeneration method of chelate resin tower in production of ionic membrane caustic soda
CN102940997A Chloroethylene constant temperature pressure-swing adsorption-desorption gas purification process
CN102923661A Anolyte clarifying tank waste chlorine gas recovery technology in ionic membrane caustic soda production
CN102604676A Sodium hypochlorite waste liquor reclaiming process
CN101973556A Method for preparing white carbon black by precipitation method
CN101935847A Method for removing trace iodine from salt water for producing sodium hydroxide by electrolysis method
CN101734667A Process for producing precipitated white carbon black by silicon tetrachloride
CN101735373A New process for SG3 type PVC (polyvinyl chloride) resin production
CN101676197A On-line detection method of free chlorine during synthesis process of hydrogen chloride
CN101293661A Ionic membrane caustic soda light salt brine fine purification technique