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HAN CHANG CO LTD

Overview
  • Total Patents
    21
  • GoodIP Patent Rank
    129,559
  • Filing trend
    ⇩ 60.0%
About

HAN CHANG CO LTD has a total of 21 patent applications. It decreased the IP activity by 60.0%. Its first patent ever was published in 1993. It filed its patents most often in Republic of Korea. Its main competitors in its focus markets measurement, medical technology and environmental technology are SAUNIER BERNARD, AMS TRACE METALS INC and TOSHIKOGYO CO LTD.

Patent filings in countries

World map showing HAN CHANG CO LTDs patent filings in countries
# Country Total Patents
#1 Republic of Korea 21

Patent filings per year

Chart showing HAN CHANG CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Song Ha Jung 18
#2 Lee Dong Kwon 12
#3 Kim Kwang Koo 5
#4 Yi Jeong Won 5
#5 Lee Joo Heon 4
#6 Kim Pan Ju 4
#7 Heo Jeong Wook 4
#8 Lee Young Keun 3
#9 Park Kyu Man 3
#10 Kim Yong Dae 2

Latest patents

Publication Filing date Title
KR102231001B1 Device for measuring organic materials using UV LED
KR102231000B1 System for analysis of total organic carbon using Kalman Filter
KR102231002B1 Method for measuring organic materials using UV LED
KR102160490B1 Plasma water treatment system with modular plate discharge tube protection filter
KR102092003B1 Total phosphorus and total nitrogen measurement system with oxidation pre-treatment unit integral fluid movement system
KR102011999B1 Total organic carbon measuring device with oxidation pre-treatment unit integral fluid movement system
KR101960697B1 Device for oxidation treatment of organic matter
KR101935863B1 Ozonic water generation system having ozone concentration controller
KR101864137B1 Plasma water treatment system with ozone dissolution accelerator
KR101809021B1 System and sensor measuring total organic carbon using conductivity method
KR101816207B1 Plasma water treatment system with voltex cooler
KR101796447B1 Electrochemical residual chlorine measuring system having automatic cleaning means
KR101796524B1 Electrochemical dissolved ozone measuring system having automatic cleaning means
KR101260711B1 Rod for backbone proofreading
KR20110116723A Bone compression equipment for kyphoplasty
KR100936051B1 General purpose catheter
KR100905486B1 Fluid injection device of bone compression equipment for kyphoplasty
KR20100026325A Apparatus for percutaneous pedicle screw fixation
KR20100026337A Non cap screw for percutaneous pedicle screw fixation
KR20090097664A Bone compression equipment for kyphoplasty