Issued Patents All Time
Showing 51–54 of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5829391 | Under-the-door mounted pet toy | Yu-Hsin Chen | 1998-11-03 |
| 5685261 | Flea gathering and disposal system | — | 1997-11-11 |
| 5649499 | Animal feeding bowl with protective cover movable by animal | Yu-Hsin Chen | 1997-07-22 |
| 5474032 | Suspended feline toy and exerciser | Yu-Hsin Chen | 1995-12-12 |