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ZHEJIANG WANFENG CHEMICAL CO LTD

Overview
  • Total Patents
    25
  • GoodIP Patent Rank
    179,569
  • Filing trend
    ⇧ 100.0%
About

ZHEJIANG WANFENG CHEMICAL CO LTD has a total of 25 patent applications. It increased the IP activity by 100.0%. Its first patent ever was published in 2009. It filed its patents most often in China. Its main competitors in its focus markets basic materials chemistry, textiles and paper and organic fine chemistry are ZHEJIANG KEYONG CHEMICAL ENG CO LTD, ZHEJIANG KEYONG CHEMICAL CO LTD and ZHEJIANG LONGSHENG DYE CHEMICAL CO LTD.

Patent filings in countries

World map showing ZHEJIANG WANFENG CHEMICAL CO LTDs patent filings in countries
# Country Total Patents
#1 China 25

Patent filings per year

Chart showing ZHEJIANG WANFENG CHEMICAL CO LTDs patent filings per year from 1900 to 2020

Focus technologies

Top inventors

# Name Total Patents
#1 Yu Xingying 16
#2 Yao Chenhua 14
#3 Zhu Yawei 9
#4 Yawei Zhu 5
#5 Yu Xiaotian 5
#6 Xingying Yu 3
#7 Cao Xueqin 3
#8 Gu Hongwei 3
#9 Hu Lei 2
#10 Chenhua Yao 2

Latest patents

Publication Filing date Title
CN109305933A A method of preparing N- alkyl -4- nitrophthalimide
CN109054429A A kind of azo dyes compounds and its preparation method and application of acetamide-containing group
CN108864732A A kind of azo dyes compounds of the group containing Methanesulfomide and its preparation method and application
CN108410211A A kind of blue series azo dye composition and its application
CN107722663A A kind of azo dyes compounds and its preparation method and application
CN107722668A A kind of azo dye composition and its application
CN104151865A Environment-friendly alkaline-resistant high-washing-dispersity orange dye composition and application thereof
CN104119695A Environment-friendly type high-efficiency washing disperse orange dye composition and application thereof
CN102875446A Preparation method of N-alkyl-4-amino-phthalimide
CN102875412A Method for oxidatively preparing azoic compound by amino compounds
CN102876068A Preparation method of phthaloyl azo dye
CN102660145A Disperse dye composition for disperse/reactive dye combination printing, and preparation and application thereof
CN102660146A Oxidation-resistant disperse dye composition and preparation and application thereof
CN102618079A Disperse dye composite, dyeing method and preparation method for disperse dye composite
CN102618080A Disperse dye composition, dyeing method and preparation method of disperse dye composition
CN102618078A Disperse dye composition, dyeing method and preparation method of disperse dye composition
CN102153889A Orange disperse dye compound
CN102153888A Disperse dye compound
CN102161839A Composition of disperse dyes
CN102153887A Composite of red disperse dye