Learn more

BEIJING YUJI SCIENCE & TECH CO LTD

Overview
  • Total Patents
    69
  • GoodIP Patent Rank
    21,318
  • Filing trend
    ⇩ 74.0%
About

BEIJING YUJI SCIENCE & TECH CO LTD has a total of 69 patent applications. It decreased the IP activity by 74.0%. Its first patent ever was published in 2015. It filed its patents most often in China, WIPO (World Intellectual Property Organization) and United States. Its main competitors in its focus markets organic fine chemistry, chemical engineering and basic materials chemistry are LAROCHE CHEM INC, CHINTA SIVADINARAYANA and SUN REFINING & MARKETING.

Patent filings in countries

World map showing BEIJING YUJI SCIENCE & TECH CO LTDs patent filings in countries

Patent filings per year

Chart showing BEIJING YUJI SCIENCE & TECH CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Quan Hengdao 47
#2 Zhang Chengping 41
#3 Jia Xiaoqing 36
#4 Qing Feiyao 24
#5 Liu Dongpeng 13
#6 Zhou Xiaomeng 9
#7 Guo Qin 8
#8 Li Zhong 7
#9 Dong Li 7
#10 Zhang Ni 6

Latest patents

Publication Filing date Title
CN112094627A Ring skeleton fluorine-containing heat transfer fluid, preparation method and application thereof
CN111925273A Production method of high-purity cis-1-chloro-3, 3, 3-trifluoropropene
CN111925274A Preparation method of Z-1-chloro-3, 3, 3-trifluoropropene
CN111792985A Fluorine-containing heat transfer fluid and preparation method and application thereof
CN111793475A Heat transfer device and method
CN111500378A Cleaning agent composed of cyclic hydrochlorofluoroolefin and chain hydrochlorofluoroolefin
CN111606341A ɑ-AlF3By the activation method of
CN111423305A Separation method of five-membered cyclic fluorochloroolefin and hydrogen fluoride azeotropic mixture
CN111470940A Method for preparing high-purity 3,3,4,4,5, 5-hexafluorocyclopentene
CN111423306A Method for preparing hydrohalocycloalkene by hydrolyzing halogenated cycloalkene
CN111129263A White light LED light source with infrared band added in spectrum
CN110526834A A method of preparing high-purity perfluor isobutyronitrile
CN110280211A A kind of desiccant of perfluor isobutyronitrile, preparation method and applications
CN110176449A A kind of LED light emission device meeting D50 standard sources
CN110002948A The preparation method of halogenated cycloolefin
CN109999788A High-valency metal fluorination catalyst, Preparation method and use
CN110002947A The preparation method of one fluothane hydrocarbon
CN110002968A The preparation method of fluorine-containing ether
CN109320436A The method that gas phase catalysis prepares perfluor nitrile
CN109336751A The method that gas phase prepares perfluor ketone