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HENGSHENG CHEMICAL CO LTD

Overview
  • Total Patents
    15
  • GoodIP Patent Rank
    112,922
  • Filing trend
    ⇩ 33.0%
About

HENGSHENG CHEMICAL CO LTD has a total of 15 patent applications. It decreased the IP activity by 33.0%. Its first patent ever was published in 2014. It filed its patents most often in China. Its main competitors in its focus markets basic materials chemistry, organic fine chemistry and chemical engineering are SOCIETE POUR L'INDUSTRIE CHIMIQUE A BALE, LEOPOLD CASSELLA & C G M B H and GESELLSCHAFT FUER CHEMISCHE INDUSTRIE IN BASEL.

Patent filings in countries

World map showing HENGSHENG CHEMICAL CO LTDs patent filings in countries
# Country Total Patents
#1 China 15

Patent filings per year

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

Top inventors

# Name Total Patents
#1 Xing Guozhang 5
#2 Zhang Weihong 5
#3 Xie Yingwei 5
#4 Sun Fenglong 4
#5 Yang Xinmin 4
#6 Tang Anding 3
#7 Liu Fengjie 3
#8 Liu Shigang 3
#9 Shao Tengwei 2
#10 Zhu Zhenhai 2

Latest patents

Publication Filing date Title
CN111995594A Continuous nitration method of 1, 2-diazoxynaphthalene-4-sulfonic acid and product
CN112111171A C.I. acid yellow 23 dye and clean production process thereof
CN111170896A Preparation method of N-ethyl-N- (3' -sulfonic acid) benzylaniline
CN111171594A Preparation method of metal complex dye with low residual chromium ions
CN109370256A A kind of mixed type black dyes and preparation method thereof
CN109593382A A kind of preparation method of red complexing type dye
CN107805403A A kind of preparation method of faintly acid orchil
CN107721887A A kind of preparation method of highly acid blue dyes
CN107338658A A kind of liquid metallized acid dye composition and preparation method thereof
CN107043553A A kind of preparation method of acid dyes
CN107043552A A kind of preparation method of carmoisine
CN106810897A A kind of yellow is complexed the preparation method of type dye
CN104194384A Method for preparing cyanuric chloride type acid dye
CN104327533A Clean production technology of acid blue 9 dye
CN104194382A Preparation method of azo type acidic dye