Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10214046 | Writing instrument having automatic sealing structure | — | 2019-02-26 |
| 10183524 | Writing instrument having automatic sealing structure | — | 2019-01-22 |
| 10099505 | Assembly structure of writing instrument | — | 2018-10-16 |
| 8834051 | Writing implement with simultaneous retractable ends | — | 2014-09-16 |
| 8678692 | Double-ended makeup brush tool having automatic sealing structure | — | 2014-03-25 |
| 8365968 | Cap of tube container having automatic sealing structure | — | 2013-02-05 |
| 8348536 | Rotary-type retractable writing implement with an anti-drying device | — | 2013-01-08 |
| 8177447 | Slide type writing tools having device for prevent dryness | — | 2012-05-15 |
| 8087840 | Slide type writing tool preventing dryness | — | 2012-01-03 |
| 7931416 | Slide type writing tool having device for preventing dryness | — | 2011-04-26 |
| D630250 | Stick-type glue dispenser | — | 2011-01-04 |
| D626175 | Writing instrument | — | 2010-10-26 |
| D618278 | Writing instrument | — | 2010-06-22 |
| D617383 | Display stand for writing tools | — | 2010-06-08 |
| 7726894 | Screw-type writing instrument having expansion and contraction function | — | 2010-06-01 |
| 7677824 | Slide pen | — | 2010-03-16 |
| 7581896 | Safety knock-type writing instrument | — | 2009-09-01 |
| D579495 | Writing instrument | — | 2008-10-28 |
| D579497 | Writing instrument | — | 2008-10-28 |
| 7220073 | Slide-type writing instrument with a dry prevention unit | — | 2007-05-22 |
| 7147393 | Stick-type glue dispenser with quick-opening cap | — | 2006-12-12 |
| D507280 | End cap for air compressor | Henry C. Chu, Taek Kyun Nam | 2005-07-12 |
| D506477 | End cap for air compressor | Henry C. Chu, Taek Kyun Nam | 2005-06-21 |