Chang Heoi Hu

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Seoul, KR

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Patents Grantslast 30 patents

Information Patent Grant
Boiler for heating and hot-water control method therefor
- Patent number 11,473,787
- Issue date Oct 18, 2022
- Kyungdong Navien Co., Ltd.
- Chang Heoi Hu
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Recirculation valve and hot water recirculation system using the same
- Patent number 11,149,870
- Issue date Oct 19, 2021
- KYUNGDONG NAVIEN CO., LTD.
- Seung Kil Son
- E03 - WATER SUPPLY SEWERAGE

Patents Applicationslast 30 patents

Information Patent Application
COMBINED HEATING AND HOT-WATER BOILER AND CONTROL METHOD THEREFOR
- Publication number 20210239327
- Publication date Aug 5, 2021
- KYUNGDONG NAVIEN CO.,LTD.
- Chang Heoi HU
- F24 - HEATING RANGES VENTILATING
Information Patent Application
HOT WATER SUPPLYING APPARATUS AND METHOD FOR UTILIZING WASTE HEAT O...
- Publication number 20200386418
- Publication date Dec 10, 2020
- Kyungdong Navien Co., Ltd.
- Hyuk CHOI
- F24 - HEATING RANGES VENTILATING
Information Patent Application
BOILER SYSTEM FOR BOTH HEATING AND HOT WATER
- Publication number 20200191412
- Publication date Jun 18, 2020
- Kyungdong Navien Co., Ltd.
- Si Hwan KIM
- F24 - HEATING RANGES VENTILATING
Information Patent Application
Recirculation Valve and Hot Water Recirculation System Using the Same
- Publication number 20200132311
- Publication date Apr 30, 2020
- KYUNGDONG NAVIEN CO., LTD.
- Seung Kil Son
- F24 - HEATING RANGES VENTILATING