| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Republic of Korea | 6 | |
| #2 | China | 2 | |
| #3 | WIPO (World Intellectual Property Organization) | 2 | |
| #4 | EPO (European Patent Office) | 1 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Telecommunications | |
| #3 | Digital networks | |
| #4 | Control | |
| #5 | Computer technology | |
| #6 | Machines | |
| #7 | Electrical machinery and energy | |
| #8 | Audio-visual technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Song Sung Myon | 5 |
| #2 | Lee Sang Zee | 3 |
| #3 | Park Jin Ha | 3 |
| #4 | Song Sungmyun | 2 |
| #5 | Lee Sangzee | 2 |
| #6 | Song Gunhwe | 2 |
| #7 | Park Jinha | 2 |
| #8 | Song In Hwe | 2 |
| #9 | Song Jianhui | 1 |
| Publication | Filing date | Title |
|---|---|---|
| KR102037848B1 | Digital electronic device operation method based on dual block chain comprising virtual blockchain | |
| KR101997673B1 | Digital electronic device based on dual block chain comprising virtual blockchain | |
| KR20180130212A | Wireless Charging Type Digital Door Lock | |
| KR20180092373A | Push-pull door lock device | |
| KR101555028B1 | Digital door lock apparatus | |
| CN104471164A | Door lock device | |
| KR20150081718A | Latch Assembly |