Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6283145 | Proportional control gas valve | — | 2001-09-04 |
| 5775236 | Combustion control circuit of combustion apparatus | Young Moon Ryoo, Hong Jib Kim | 1998-07-07 |
| 5775895 | Combustion-state detecting circuit of combustion apparatus | Young Moon Ryoo, Hong Jib Kim | 1998-07-07 |
| 5575640 | Burner for gas burning apparatus | Myeong C. Park | 1996-11-19 |
| 5567147 | Burner for burning apparatus | Yong-Song Lee | 1996-10-22 |
| 5566648 | Heat exchanger | Young Moon Ryoo | 1996-10-22 |
| 5526776 | Gas quick water heater | Young Moon Ryoo, Min Hwan OH, Hong Jib Kim | 1996-06-18 |
| 5503183 | Hot-water thermoregulating valve | Min Hwan OH | 1996-04-02 |
| 5365887 | Ultra-high efficiency on-demand water heater and heat exchanger | — | 1994-11-22 |
| 5279284 | Skin stimulation device | — | 1994-01-18 |
| 4281632 | Throttle body and mixing tube | — | 1981-08-04 |
| 4263233 | Fuel preparation for internal combustion engines | — | 1981-04-21 |
| 4258547 | Engine cylinder head having thermal insulation in a coolant passage adjacent an exhaust outlet | — | 1981-03-31 |