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YAN XUEWEN

Overview
  • Total Patents
    11
  • GoodIP Patent Rank
    177,962
  • Filing trend
    0.0%
About

YAN XUEWEN has a total of 11 patent applications. It increased the IP activity by 0.0%. Its first patent ever was published in 1996. It filed its patents most often in China. Its main competitors in its focus markets organic fine chemistry and materials and metallurgy are SPOFA SPOJENE FARMACEUTICKE Z, UNION QUIMICO FARMA and DAUSSE SA LAB.

Patent filings in countries

World map showing YAN XUEWENs patent filings in countries
# Country Total Patents
#1 China 11

Patent filings per year

Chart showing YAN XUEWENs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Yan Xuewen 10
#2 Huang Huanjun 4
#3 Wang Cunliang 4
#4 Wang Xiaoqiao 4
#5 Xu Lingyan 4
#6 Jingsu Zhang 1
#7 Liang Yong 1
#8 Xuewen Yan 1
#9 Zhang Li 1

Latest patents

Publication Filing date Title
CN110642785A Preparation method of ethyl quinolinecarboxylate
CN110642763A Synthetic method of thiamphenicol
CN110642773A Industrial preparation method of high-purity 4-fluoroisatin
CN110642775A Synthesis method of dimethylpiperidine
CN109761901A It is a kind of for synthesizing the intermediate preparation of Marbofloxacin
CN109762039A High-content Tilmicosin preparation method
CN109761864A A kind of 3- methyl -4-(4- trifluoromethylthio) phenoxy group-nitrobenzene preparation method
CN109761900A A kind of preparation method of Ciprofloxacin Hydrochloride
CN104163376A Goods delivering and receiving method of multistoried building and dedicated goods delivering machine thereof
CN1243862A Efficient, energy-saving and environment-protecting composite reaction catalyst of coal gangue, coke dregs and poor-quality coal
CN1143620A Colour changing treatment for natural granite and process flow thereof