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CHOI CHANG JOON

Overview
  • Total Patents
    23
  • GoodIP Patent Rank
    119,541
  • Filing trend
    ⇩ 50.0%
About

CHOI CHANG JOON has a total of 23 patent applications. It decreased the IP activity by 50.0%. Its first patent ever was published in 1991. It filed its patents most often in Republic of Korea, United States and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets environmental technology, electrical machinery and energy and telecommunications are HEFEI LIANXIN POWER SUPPLY CO LTD, SHANGHAI ZANDI NETWORK TECH CO LTD and EON CONSULTING PROPRIETARY LTD.

Patent filings in countries

World map showing CHOI CHANG JOONs patent filings in countries

Patent filings per year

Chart showing CHOI CHANG JOONs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Choi Chang Joon 22
#2 Choi Jae Boo 11
#3 Choi Jaeboo 1
#4 Choi Chang-Joon 1

Latest patents

Publication Filing date Title
KR20210020799A Power Line Communication with Polarity switching
KR20180118088A Management method for road guidance lights supported by solar cells at the backwoods where common use AC power grid is not connected
WO2017204485A1 Communication transmitting/receiving apparatus capable of inputting unique id for communication in accordance with numeration system
KR20170133260A Communication Apparatus with ID input method which is appropriate to numeral system
KR20160123979A The Apparatus for Extended Function Controls of Loads Connected via AC Single Power Line
KR20150088983A Management method for road guidance lights supported by solar cells
KR20140127193A AC Power Line Communication System
KR20140094674A DC Power Line Communication Control System
KR20140066983A Elevator emergency light system for power saving main light
KR20150122396A Automatic Testing Device for charge-discharge characteristics of Lithium Battery Pack
KR20150086580A Telephone for emergency usage in Elevator Cage
KR20130091298A Emergency elevator light system
KR20130030707A Cutting system or method or electric circuits for cutting or reconnecting the terminal electric power load to incoming electric power according to the quality of supplied incoming electricity for preventing of wide blackout crisis
KR20110131162A Module for electricity appliance which stops the function of making electric loads for a time according to the electricity quality and the electricity appliance which uses the module
KR20110110084A Cutting system or apparatus to cut or reconnect the terminal electric power load and circuits to incoming power according to the quality of supplied incoming electricity for preventing of wide blackout crisis
KR20040004249A kipo
KR20050053072A mobile phone service between a guardian and a ward with a ward's mobile phone which has only restricted functions.
US5225814A Device for detecting defective core wires of a multi-core cable