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LI YUNYAN

Overview
  • Total Patents
    12
About

LI YUNYAN has a total of 12 patent applications. Its first patent ever was published in 1992. It filed its patents most often in China. Its main competitors in its focus markets measurement and semiconductors are MEMS CORE CO LTD, ERNST PRESSER and OMRON CO.

Patent filings in countries

World map showing LI YUNYANs patent filings in countries
# Country Total Patents
#1 China 12

Patent filings per year

Chart showing LI YUNYANs patent filings per year from 1900 to 2020

Focus industries

Focus technologies

Top inventors

# Name Total Patents
#1 Tu Xiangzheng 7
#2 Li Yunyan 6
#3 Tu Xiangzheng Li 3
#4 Tu Peng 2
#5 To Xiangzheng 1
#6 Ting Xiangzheng 1

Latest patents

Publication Filing date Title
CN1781723A Qptic micro switch printer
CN1654927A All silicon integrated flow sensor and method for manufacturing the same
CN1439722A DNA probe array synthesis, photoswitch array combination and manufacture thereof
CN1371007A Micromechanical light switch array
CN1326104A Mechanically modulated WDM transmitting and receiving module
CN1251945A Thermal radiation infrared sensor for fine machining
CN1242524A Infrared FABRY-PEROT filter used for fine processing procedure
CN1227164A Front jetting single-chip integrated hot steam ink-jet printing head
CN1217470A Double-electrode monocrystal silicon capacitance acceleration sensor and mfg. method therefor
CN1174984A Thermal type flow sensor for very fine working
CN1146953A Single chip integrated heat vapor ink-jet print head
CN1087718A Optical fibre thermosensitive device and its manufacture method