Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1068307 | Modular sofa | — | 2025-04-01 |
| D551989 | Translucent pill crusher pouch | Mark Engel, Song Yang, Qiulin Bao | 2007-10-02 |
| 7252254 | Pill crusher and splitter | Mark Engel, Song Yang, Qiulin Bao | 2007-08-07 |