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WUJIANG MEIYAN SANYOU DYESTUFF CHEMICAL CO LTD

Overview
  • Total Patents
    16
  • GoodIP Patent Rank
    173,976
  • Filing trend
    ⇧ 100.0%
About

WUJIANG MEIYAN SANYOU DYESTUFF CHEMICAL CO LTD has a total of 16 patent applications. It increased 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 materials and metallurgy, organic fine chemistry and environmental technology are MILLER JORGE, ZHEJIANG CHANGZHENG CHEMICAL CO LTD and NANJING UNIVERSITY & YANCHENG ACADEMY OF ENVIRONMENTAL PROT TECHNOLOGY AND ENGINEERING.

Patent filings in countries

World map showing WUJIANG MEIYAN SANYOU DYESTUFF CHEMICAL CO LTDs patent filings in countries
# Country Total Patents
#1 China 16

Patent filings per year

Chart showing WUJIANG MEIYAN SANYOU DYESTUFF CHEMICAL CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Zhang Zhengfu 11
#2 Yi Yuanlong 6
#3 Zhengfu Zhang 5
#4 Zhu Jinfa 3
#5 Jinfa Zhu 3
#6 Xu Gang 3
#7 Lianxing Zhong 3
#8 Zhong Lianxing 2
#9 Dong Zhitang 2
#10 Yuanliang Cai 1

Latest patents

Publication Filing date Title
CN109535040A A kind of preparation method of clean type product amido-G-acid
CN109705610A A kind of directly preparation method of blended light yellow D-GL
CN107602422A A kind of clean type product 1,6,1,7 mixes the preparation method of 1-naphthlamine-6-sulfonic acid
CN105753235A 3, 3', 4, 4'-tetraaminobiphenyl wastewater comprehensive treatment and resource utilization method
CN105111092A Continuous preparation method of DAB (3,3'-diaminobenzidine)
CN104356000A Method for preparing 3-nitro-4-methoxy benzoic acid
CN104193646A Preparation method for p-aminobenzamide
CN104119247A Preparation method of 4-chloro-2,5-dimethoxyacetyl acetanilide
CN104004379A Method for producing direct yellow blend dye
CN102558900A Preparation method for direct blending scarlet D-GLN
CN102408743A Production process of direct blending navy blue D-R dye
CN101531831A Production method for directly blending brown D-RS dye
CN101531633A Purification method of quinaldine
CN101307188A Preparation process for directly blended spinning yellow dye
CN101307011A Method of preparing N-ethyl-N-cyanoethyl aniline
CN101307187A Preparation process for directly blended spinning navy D-R dye