Top Inventors at Dong Yang Piston Co. All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Kwan Ho RYU | 7 |
| 2 | Jun Kui YANG | 6 |
| 3 | In Cheol Yoo | 3 |
| #4 | Jeong Keon LEE | 3 |
| #5 | Jeong Keun LEE | 3 |
| #6 | Sang Hyuk JUN | 3 |
| #7 | Jang-Ik Park | 2 |
| #8 | Ju-Hyun Sun | 2 |
| #9 | Lee Cheol JI | 2 |
| #10 | Sang-Bean PARK | 2 |
| #11 | Woo-Seok Shim | 2 |
| #12 | Chang Jun Lee | 1 |
| #13 | Duck Whan Kim | 1 |
| #14 | Hyeok Chul Yang | 1 |
| #15 | Jung-Hun JI | 1 |
| #16 | Jung Han Yu | 1 |
| #17 | Kang-Wook Park | 1 |
| #18 | Keun-jae Lee | 1 |
| #19 | Kwi Seong Jeong | 1 |
| #20 | Min-Woo Lee | 1 |
| #21 | Sang Min Lee | 1 |
| #22 | Tae Heon Kim | 1 |
| #23 | Tae Min Lee | 1 |
| #24 | Tae Keun Park | 1 |
| #25 | Yong-Woo Choi | 1 |
| #26 | Young Bum Kum | 1 |
| #27 | Young-Je Lee | 1 |