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CHANGZHOU HUADA KEJIE OPTO ELECTRO INSTR CO LTD

Overview
  • Total Patents
    61
  • GoodIP Patent Rank
    36,213
  • Filing trend
    ⇧ 80.0%
About

CHANGZHOU HUADA KEJIE OPTO ELECTRO INSTR CO LTD has a total of 61 patent applications. It increased the IP activity by 80.0%. Its first patent ever was published in 2007. It filed its patents most often in China, WIPO (World Intellectual Property Organization) and EPO (European Patent Office). Its main competitors in its focus markets measurement, optics and mechanical elements are OTTICO MECCANICA ITALIANA E RI, RUDOLF STUETZER and PENTAX PREC CO LTD.

Patent filings in countries

World map showing CHANGZHOU HUADA KEJIE OPTO ELECTRO INSTR CO LTDs patent filings in countries

Patent filings per year

Chart showing CHANGZHOU HUADA KEJIE OPTO ELECTRO INSTR CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Zhang Ou 57
#2 Zong Xiaoming 11
#3 Niu Qing 10
#4 Fei Kai 10
#5 Peng Dongdong 8
#6 Zhu Hongjun 6
#7 Wang Jianyong 6
#8 Ding Ding 5
#9 Fu Junjie 4
#10 Wu Jun 3

Latest patents

Publication Filing date Title
WO2021004292A1 Leveling system for leveling instrument and leveling instrument
CN110861043A Rotary workbench
CN109974677A A kind of light channel structure and the laser level using the light channel structure
CN109059881A A kind of Geoplane and a kind of method of angle measurement
CN109186564A A kind of Geoplane and a kind of method of ranging
US2020192207A1 Laser point projecting device
CN108007396A A kind of Laser Measuring Barebone
CN108007397A A kind of Laser Measuring Barebone
WO2018171277A1 Cross line laser
WO2018171276A1 Micromirror-based levelling instrument
CN108196262A A kind of laser ranging system
EP3647721A1 Measuring tool
EP3413017A1 Laser level ruler
CN105241436A Module structure and laser collimator with the structure
CN105157686A Light splitting structure and laser demarcation device comprising same
CN105005146A Light splitting module and laser demarcation device provided with light splitting module
CN105071450A Laser instrument with rechargeable battery
CN104953657A Charge control circuit and laser instrument provided with same
CN104936400A Ventilating member for photoelectric instrument
CN104930161A Fine tuning structure