Issued Patents All Time
Showing 1–25 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6461092 | Anti-dead locking, anti-vibration and loosening-proof bolt/nut structure | — | 2002-10-08 |
| 6358345 | Method for producing porous sponge like metal of which density of pores is controllable | — | 2002-03-19 |
| 6302117 | Nail file including inner and outer helical springs | — | 2001-10-16 |
| 6293480 | Structure of grinding medium controllable in shape and specific gravity | — | 2001-09-25 |
| 6279365 | Cold forging forming method for three-dimensional hollow article | — | 2001-08-28 |
| 6233998 | Easy mode pipe-reducing device | — | 2001-05-22 |
| 6230718 | Toothpick convenient for carrying and improved in picking | — | 2001-05-15 |
| 6212934 | Recoverable and reusable cold forging dies | — | 2001-04-10 |
| 6183262 | Magnetic drawing board structure | — | 2001-02-06 |
| 6162310 | Method for producing porous sponge like metal of which the shapes and sizes of pores are controllable | — | 2000-12-19 |
| 6143212 | Super-low temperature plastic powder manufacturing method by aid of gas | — | 2000-11-07 |
| 6142005 | Die-protecting device used in bending an embossed metallic straight pipe with a small diameter and a thin wall | — | 2000-11-07 |
| 6101858 | Forming method for forked artistic aluminum or copper alloy pipes | — | 2000-08-15 |
| 6049982 | Integrated molding method for the front fork of a bicycle | — | 2000-04-18 |
| 6044687 | Three-dimensional simple flexible mould for bending pipes | — | 2000-04-04 |
| 6045289 | Hidden screw-pressing structure for a pipe connector | — | 2000-04-04 |
| 6033417 | Safe roll--scraping ear pick | — | 2000-03-07 |
| 6032511 | Three-dimensional simple flexible mould for bending pipes | — | 2000-03-07 |
| 5997383 | Isostatic pressure plastic grinding method | — | 1999-12-07 |
| 5996640 | DIY flexible pipe with rigidity | — | 1999-12-07 |
| 5983698 | Easy removed die core device used for cold swaging | — | 1999-11-16 |
| 5974854 | Apparatus for bending forging artistic metallic pipes | — | 1999-11-02 |
| 5968213 | Structure of a forceful grinding medium | — | 1999-10-19 |
| 5964655 | Centrifugal rotational countersink reamer for three-dimensional bores | — | 1999-10-12 |
| 5961136 | Connecting cantilever structure for bicycle mud-guards | — | 1999-10-05 |