Inventor
PARK DUCK SIK
KR10 patents
Patents
10 patentsUS11585572B2Feb 21, 2023
Heat exchanger unit and condensing boiler using the same
KYUNGDONG NAVIEN CO LTD9 citations84
US11320173B2May 3, 2022
Smoke tube boiler
KYUNGDONG NAVIEN CO LTD0 citations62
US12331959B2Jun 17, 2025
Heat exchanger unit
KYUNGDONG NAVIEN CO LTD0 citations61
US11976819B2May 7, 2024
Flue pipe separation sensing apparatus and boiler including the same
KYUNGDONG NAVIEN CO LTD0 citations61
US11879666B2Jan 23, 2024
Heat exchanger unit
KYUNGDONG NAVIEN CO LTD0 citations61
US11835261B2Dec 5, 2023
Heat exchanger unit
KYUNGDONG NAVIEN CO LTD0 citations61
US11835262B2Dec 5, 2023
Heat exchanger unit
KYUNGDONG NAVIEN CO LTD0 citations61
US12241641B2Mar 4, 2025
Air heating apparatus
KYUNGDONG NAVIEN CO LTD0 citations58
US11306943B2Apr 19, 2022
Tube assembly for tubular heat exchanger, and tubular heat exchanger comprising same
KYUNGDONG NAVIEN CO LTD0 citations50
US10281149B2May 7, 2019
Reverse flow prevention apparatus for common exhaust flue and combustion apparatus having same
KYUNGDONG NAVIEN CO LTD0 citations40