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CHO KEON HWAN

Overview
  • Total Patents
    13
About

CHO KEON HWAN has a total of 13 patent applications. Its first patent ever was published in 2004. It filed its patents most often in Republic of Korea and United States. Its main competitors in its focus markets chemical engineering, materials and metallurgy and environmental technology are PRAYON DEV SA, SWAPSOL CORP and DEUTERIUM CORP.

Patent filings in countries

World map showing CHO KEON HWANs patent filings in countries
# Country Total Patents
#1 Republic of Korea 12
#2 United States 1

Patent filings per year

Chart showing CHO KEON HWANs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Cho Keon Hwan 13

Latest patents

Publication Filing date Title
US2014099360A1 Gas Storage Vessel, Hydrogen-Charging Method, and Hydrogen-Charging Apparatus
KR20120065787A Candy and capsule for hydrogen production in intestine, manufacturing method thereof and wrapping material therefor
KR20110115444A Soft membrane gases container and method for hydrogen gases filling therein
KR20110070324A Method, apparatus and capsule for containing hydrogen
KR20100013796A Method and apparatus for segregation of rare gases stream
KR20090080778A Method and System for Exhaust Gases Recovery of Semiconductor Device Fabricating Equipment
KR20090005702A Apparatus for enriching and purifying waste helium gases
KR20080036271A Apparatus for concentration of waste helium
KR20080025840A Method and apparatus for enriching neon and/or helium
KR20080021245A Method and apparatus for recovery and recycling of used helium gas
KR20060091067A Method and apparatus for cryogenic helium purification
KR20060023461A Method and apparatus for purifying helium gas
KR20060018459A Method and apparatus for separating krypton gas and xenon gas