Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8918945 | Toothbrush with needle-shaped bristles for improving tooth and gum contacting force and teeth-cleaning performance, and method for manufacturing same | Young-Jun Kwon, Sung-Wook Kwon | 2014-12-30 |
| 8522389 | Manufacturing method of needle-shaped bristles having short taper length and a toothbrush by same manufacturing method | Young-Jun Kwon, Sung-Wook Kwon | 2013-09-03 |
| 8424145 | Toothbrush having needle-shaped bristles with various end points and manufacturing method thereof | Young-Jun Kwon, Sung-Wook Kwon | 2013-04-23 |
| 8403425 | Processing method for taper of needle-shaped bristle enhanced throughput | Young-Jun Kwon, Sung-Wook Kwon | 2013-03-26 |
| 8336967 | Method of tapering bristles for toothbrushes, and toothbrush having bristles manufactured by said method | Young-Jun Kwon, Sung-Wook Kwon | 2012-12-25 |
| 8333436 | Processing method for taper of needle-shaped bristle enhanced throughput | Young-Jun Kwon, Sung-Wook Kwon | 2012-12-18 |
| 8186765 | Method of manufacturing toothbrush with needle-shaped bristles, and toothbrush manufactured by the same | Young-Jun Kwon, Sung-Wook Kwon | 2012-05-29 |
| 8172337 | Toothbrush having needle-shaped bristles with various end points and manufacturing method thereof | Young-Jun Kwon, Sung-Wook Kwon | 2012-05-08 |
| 8136889 | Needle-shaped bristle and method of manufacturing the same | Young-Jun Kwon, Sung-Wook Kwon | 2012-03-20 |
| 8029069 | Method of manufacturing toothbrush with needle-shaped bristles, and toothbrush manufactured by the same | Young-Jun Kwon, Sung-Wook Kwon | 2011-10-04 |
| 7938492 | Toothbrush having pressure relief unit and method of producing same | Young-Jun Kwon, Sung-Wook Kwon | 2011-05-10 |
| 7832811 | Method of manufacturing toothbrush with needle-shaped bristles and toothbrush manufactured by the same | Young-Jun Kwon, Sung-Wook Kwon | 2010-11-16 |