LIU WENJUAN has a total of 14 patent applications. Its first patent ever was published in 2004. It filed its patents most often in China and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets chemical engineering, engines, pumps and turbines and medical technology are INSTITUTUL NAT DE CERCETARE DEZVOLTARE PENTRU STIINTE BIOLOGICE, TORF CORP FABRYKA LEKOW SP Z O and DDS DRUG DELIVERY SERVICE GES.
# | Country | Total Patents | |
---|---|---|---|
#1 | China | 13 | |
#2 | WIPO (World Intellectual Property Organization) | 1 |
# | Industry | |
---|---|---|
#1 | Chemical engineering | |
#2 | Engines, pumps and turbines | |
#3 | Medical technology | |
#4 | Pharmaceuticals | |
#5 | Materials and metallurgy | |
#6 | Environmental technology | |
#7 | Machines | |
#8 | Agriculture |
# | Technology | |
---|---|---|
#1 | Separation | |
#2 | Positive-displacement engines | |
#3 | Object sterilising | |
#4 | Cleaning | |
#5 | Spraying devices | |
#6 | Medical preparations | |
#7 | Animal catching | |
#8 | Chemical or physical processes | |
#9 | Compounds containing metals | |
#10 | Solid waste disposal |
# | Name | Total Patents |
---|---|---|
#1 | Liu Wenjuan | 14 |
#2 | Qi Jingyu | 2 |
#3 | Chen Yongping | 2 |
Publication | Filing date | Title |
---|---|---|
CN111974150A | Welding fume purifier | |
CN112108497A | Kitchen waste treatment device | |
CN110586008A | Oxidation device convenient for slag discharge and cleaning | |
CN110548305A | Easy-to-use heat exchange evaporation device | |
CN108719256A | A kind of pesticide dispersal equipment for fruit tree seedling culture | |
CN106214903A | A kind of postpartum care Chinese medicine composition | |
CN105484359A | Exposed corner line as decorative plate fixed connecting piece | |
CN104174531A | Automatic paint spraying machine | |
CN104257137A | Health care chair | |
CN104184009A | Lamp bulb clamp applied to single-ended halogen lamp aging machine | |
CN104183441A | Lamp bulb clamping mechanism applied to single-ended halogen lamp aging machine | |
CN104155617A | Single-ended halogen lamp aging machine | |
CN1670383A | Environment-protecting energy-saving oil pressure power machine |