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CHANG JO 21 CO LTD

Overview
  • Total Patents
    35
About

CHANG JO 21 CO LTD has a total of 35 patent applications. Its first patent ever was published in 2005. It filed its patents most often in Republic of Korea, WIPO (World Intellectual Property Organization) and EPO (European Patent Office). Its main competitors in its focus markets thermal processes, audio-visual technology and telecommunications are TROX UK LTD, HACHIYO ENGINEERING CO LTD and BEAN JR JOHN H.

Patent filings per year

Chart showing CHANG JO 21 CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Park Hee Tae 31
#2 Tae Park Hee 2
#3 Kim Yong Tae 1
#4 Park Hee-Tae 1
#5 Shin Jeong Soo 1

Latest patents

Publication Filing date Title
KR20100119113A Air conditioner
KR20080105609A Air conditioning system for communication equipment and controlling method thereof
KR20080105622A Air conditioning system for communication equipment and controlling method thereof
KR20080105605A Air conditioning system for communication equipment and controlling method thereof
KR20080105628A Air conditioning system for communication equipment and controlling method thereof
KR20080105607A Air conditioning system for communication equipment and method for preventing frozen
KR100869534B1 Air conditioning system for communication equipment and controlling method thereof
CN101171468A Air conditioning system for communication equipment and controlling method thereof
US2008250807A1 Air conditioning system for communication equipment and controlling method thereof
KR20080020818A Air conditioning system for communication equipment and controlling method thereof
KR20080020817A Air conditioning system for communication equipment
KR20070080532A Air conditioning system for communication equipment and controlling method thereof
KR100687280B1 Dual heat exchanging structure of air conditioning system for communication equipment
KR100680262B1 Connection structure of condenser tubes in air conditioning system for communication equipment
KR100585991B1 Air conditioner and method for controlling thereof