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Jaehyeok Choi
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Yangsan-si, KR
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Patents Grants
last 30 patents
Information
Patent Grant
Connector for double pipe heat exchanger
Patent number
D819186
Issue date
May 29, 2018
HS R & A Co., Ltd.
Sungryong Huh
D23 - Environmental heating and cooling
Information
Patent Grant
Dual pipe for heat exchange
Patent number
9,513,061
Issue date
Dec 6, 2016
HS R&A Co., Ltd.
Jaehyeok Choi
F28 - HEAT EXCHANGE IN GENERAL
Patents Applications
last 30 patents
Information
Patent Application
DUAL PIPE FOR HEAT EXCHANGE
Publication number
20140060786
Publication date
Mar 6, 2014
HS R & A CO., LTD.
Jaehyeok Choi
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Application
DOUBLE PIPE HEAT EXCHANGER HAVING MULTI-DIRECTIONAL CONNECTOR AND A...
Publication number
20130146262
Publication date
Jun 13, 2013
HS R & A CO., LTD.
Sungryong Huh
F28 - HEAT EXCHANGE IN GENERAL