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ZHENGZHOU SIGMA CHEMICAL CO LTD

Overview
  • Total Patents
    14
  • GoodIP Patent Rank
    177,149
About

ZHENGZHOU SIGMA CHEMICAL CO LTD has a total of 14 patent applications. Its first patent ever was published in 2013. It filed its patents most often in China. Its main competitors in its focus markets organic fine chemistry, basic materials chemistry and chemical engineering are INST CHEMISTRY CO LTD HENAN ACADEMY OF SCIENCES, FED GOSUDARSTVENNOE BYUDZHETNOE UCHREZHDENIE NAUKI INST ORGANICHESKOJ KHIMII IM N D ZELINSKOGO ROSSI and FEDERALNOE GOSUDARSTVENNOE BYUDZHETNOE UCHREZHDENIE NAUKI INST NEFTEKHIMII I KATALIZA ROSSIJSKOJ AKA.

Patent filings in countries

World map showing ZHENGZHOU SIGMA CHEMICAL CO LTDs patent filings in countries
# Country Total Patents
#1 China 14

Patent filings per year

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

Top inventors

# Name Total Patents
#1 Wang Jianli 14
#2 Yang Yong 12
#3 Hu Xiaolun 9
#4 Hao Jiajin 9
#5 Zhao Pingping 7
#6 Xu Yajuan 5
#7 Li Yibo 4
#8 Shi Tianli 4
#9 Wu Xiaojun 3
#10 Yang Guangyuan 3

Latest patents

Publication Filing date Title
CN106397356A Preparation method of thiomorpholine-1,1-dioxide hydrochloride and preparation method of thiomorpholine-1,1-dioxide
CN106187862A A kind of preparation method of 1 t-butoxycarbonylpiperidin 4 formaldehyde
CN105601504A Preparation method of 2-(2--fluoro-4-biphenylyl) propionic acid
CN105130732A Preparation method of cyclic di-p-xylyene
CN104926679A Method for preparing 2-amino-4-acetamido anisole
CN104557570A Preparation method of bis tetraethylammonium dodecahydrododecaborate
CN104592115A Preparation method of acridone N-alkylation derivative
CN104402918A Method preparing de-hydrogen de-boric acid bi-tetraethyl ammonium
CN103694173A Acridone derivatives and synthesis method thereof
CN103755634A 9-aminoacridine derivative and synthetic method thereof
CN103554094A Method for preparing 2,2'-bipyridyl-4,4-(5-hexyl-2-thiophene)
CN103553986A Method for preparing 3,4-diamino-benzenesulfonamide
CN103497089A Method for preparing 1,4-pentadiine-3-ethonal
CN103396362A Method for preparing 9-oxo-10(9H)-acridineacetic acid