Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1093821 | Sunhat with opening | John Yoo | 2025-09-23 |
| D1081078 | Ear flap hat with opening | John Yoo | 2025-07-01 |
| D1079204 | Wide brim hat with opening | John Yoo | 2025-06-17 |
| D1078226 | Gardening hat with opening | John Yoo | 2025-06-10 |
| 6657387 | Plasma display Panel (PDP) having black matrix made of light shielding material filled in a groove formed in the front substrate of PDP between adjacent discharge cells | — | 2003-12-02 |