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WANHUA CHEMICAL GROUP CO LTD

Overview
  • Total Patents
    1,640
  • GoodIP Patent Rank
    1,007
  • Filing trend
    ⇧ 52.0%
About

WANHUA CHEMICAL GROUP CO LTD has a total of 1,640 patent applications. It increased the IP activity by 52.0%. Its first patent ever was published in 2009. It filed its patents most often in China, WIPO (World Intellectual Property Organization) and United States. Its main competitors in its focus markets organic fine chemistry, macromolecular chemistry and polymers and chemical engineering are NOVOMER INC, HOWARDS ILFORD LTD and BEIJING DONGFANG HONGSHENG NEW ENERGY APPLIC TECHNOLOGY INST CO LTD.

Patent filings per year

Chart showing WANHUA CHEMICAL GROUP CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Li Yuan 681
#2 Hua Weiqi 366
#3 Zhang Hongke 191
#4 Zhang Yongzhen 161
#5 Chen Haibo 125
#6 Huang Qishan 113
#7 Shang Yonghua 107
#8 Zhang Tao 87
#9 Sun Jiakuan 87
#10 Wang Lei 85

Latest patents

Publication Filing date Title
CN112250538A Cumene refining process flow
CN112225640A Method for preparing enol by selective hydrogenation of alkynol
CN112239416A Preparation process of toluene diisocyanate with low chlorine and bromine hydrolysis
CN112121848A Modified hierarchical pore molecular sieve catalyst, preparation method thereof and production method of 3-methyl-2-butene-1-ol
CN112142583A Method for preparing neral from geranial
CN112110805A Method for preparing R-citronellal
CN112267118A Vapor phase corrosion inhibitor for protection during maintenance of chemical equipment and preparation method thereof
CN112142561A Method for preparing isopulegol from citronellal
CN112250556A Preparation method of menthone
CN112159308A Method for preparing nerol from geraniol
CN112250832A Waterborne polyurethane resin and preparation method and application thereof
CN112206765A Preparation method of bimetallic catalyst and application of bimetallic catalyst in synthesis of allyl ether
CN112225885A Copolyester and preparation method thereof
CN112285261A Novel derivatization reagent, method for testing sulfur-containing component and application
CN112121794A Selective hydrogenation catalyst, preparation method and application thereof
CN112175178A Polycarbonate and preparation method and application thereof
CN112169830A Preparation method of basic metal oxide @ ZSM-5 catalyst, catalyst prepared by preparation method and application of catalyst
CN112225862A Polyurethane open-cell hard foam composition, preparation method and application
CN112142900A Preparation method of styrene-acrylonitrile copolymer
CN112225678A Method for preparing isocyanate with stable activity and isocyanate