Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7150692 | Sport good of composite material with lighter weight and greater rigidity | — | 2006-12-19 |
| 6506133 | Racket with apparatus for enhancing elasticity of network | — | 2003-01-14 |
| 6033325 | Game racket handle having adjustable length | — | 2000-03-07 |
| 5620180 | Grip of badminton racket | — | 1997-04-15 |
| 5282617 | Game racket capable of prolonging thereon dwelling time of ball | — | 1994-02-01 |
| 5282618 | Racket with improved shock-absorbing means | — | 1994-02-01 |
| 5242162 | String holes of a sports racket frame | — | 1993-09-07 |
| 5234657 | Method of making string holes in a sports racket frame | — | 1993-08-10 |
| 5192072 | Game racket having improved stringing means | — | 1993-03-09 |