Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6427361 | Variable ratio control shoe with automatic tying and untying shoelace | — | 2002-08-06 |
| 5983530 | Shoes with automatic shoestring tying/untying mechanism | — | 1999-11-16 |
| 5823215 | Automatic closing and opening umbrella with fixed type of plural sections of middle rod in variable dynamic process and ratio | Chin-I Lin | 1998-10-20 |
| 4782845 | Double-locking adjustable brace | — | 1988-11-08 |
| 4694986 | Disposable container | — | 1987-09-22 |
| 4571837 | Ellipsograph | Tien-Fu Cheng | 1986-02-25 |
| 4563819 | Ellipsograph capable of drawing dotted line | Tien-Fu Ching | 1986-01-14 |