Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9869490 | Boiler having increased indoor heating efficiency and enabling simultaneous use of indoor heating and hot water | — | 2018-01-16 |
| 9341370 | Gas boiler including output adjusting device, and method of adjusting output of gas boiler | — | 2016-05-17 |
| 9121604 | Board-plank premixing burner port arrangement | — | 2015-09-01 |
| 8944013 | Pipe connecting structure of water heater | — | 2015-02-03 |
| 8573161 | Hot-water supply system having dual pipe | — | 2013-11-05 |
| 8375898 | Storage type boiler heating exchanging structure for preventing condensation | — | 2013-02-19 |
| 8302566 | Dual pipe heat exchanger of instantaneous boiler for house heating and hot water and boiler | — | 2012-11-06 |
| 8291869 | Method for preventing coagulation in exhaust pipe of boiler | — | 2012-10-23 |
| 8231103 | Flow control valve | — | 2012-07-31 |
| 8215952 | Burner having variable output structure | — | 2012-07-10 |
| 8191859 | Water flow control valve | — | 2012-06-05 |
| 8117997 | Dual pipe heat exchanger of boiler for house heating and hot water | — | 2012-02-21 |
| 8042495 | Device for preventing initial hot water supplying in concentric tube type heat exchanger and its control method | — | 2011-10-25 |
| 8042496 | Hot-water supply system having supplementary heat exchanger | — | 2011-10-25 |
| 7874834 | Air fuel ratio sensor of incinerator | — | 2011-01-25 |
| 7628122 | Method for maximum efficiency of non-condensing boiler | — | 2009-12-08 |
| 5778829 | Gas boiler | — | 1998-07-14 |
| 5687440 | Washing method capable of preventing the formation of suds in a washing machine | Seung-Jun Lee, Chung-Sik Jung | 1997-11-18 |