Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11206964 | Cleaner | Philjae Hwang, Taekgi Lee, Mantae Hwang, Jungbae Hwang | 2021-12-28 |
| 11179015 | Cleaner | Bohyun Nam, Namhee Kim, Jinju Kim, Hyeonjeong An, Jungbae Hwang +3 more | 2021-11-23 |
| 11122948 | Vacuum | Philjae Hwang, Mantae Hwang, Jungbae Hwang, Taekgi Lee | 2021-09-21 |
| 11096538 | Cleaner | Philjae Hwang, Mantae Hwang, Jungbae Hwang, Taekgi Lee | 2021-08-24 |
| 11089932 | Vacuum | Philjae Hwang, Mantae Hwang, Jungbae Hwang, Taekgi Lee | 2021-08-17 |
| 11076736 | Cleaner | Philjae Hwang, Taekgi Lee, Mantae Hwang, Jungbae Hwang | 2021-08-03 |
| 11064855 | Cleaner | Philjae Hwang, Mantae Hwang, Jungbae Hwang, Taekgi Lee | 2021-07-20 |
| 11045058 | Cleaner | Philjae Hwang, Mantae Hwang, Jungbae Hwang, Taekgi Lee | 2021-06-29 |
| 11013382 | Cleaner | Philjae Hwang, Mantae Hwang, Jungbae Hwang, Taekgi Lee | 2021-05-25 |
| 10945573 | Cleaner | Bohyun Nam, Namhee Kim, Jinju Kim, Hyeonjeong An, Jungbae Hwang +3 more | 2021-03-16 |
| 10939789 | Cleaner | Bohyun Nam, Namhee Kim, Jinju Kim, Hyeonjeong An, Jungbae Hwang +3 more | 2021-03-09 |