| # | Name | Location | Applications |
|---|---|---|---|
| 1. | J. C K. Industries, Inc. | 🇺🇸 Huron, OH, United States | 1 |
| 2. | JC KOREA CORP. | 🇰🇷 Seoul, South Korea | 1 |
| 3. | JC KOREA CORP. | 🇰🇷 Gyeonggi-do, South Korea | 10 |
| 4. | JC KOREA CORP. | 🇰🇷 Anyang-si, South Korea | 1 |
| 5. | JCK Industries LLC | 🇺🇸 Rolla, MO, United States | 1 |
| 6. | JCK Tools, LLC | 🇺🇸 Earlham, IA, United States | 1 |