Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D587244 | Loudspeaker device | Kian Choon Janie Lim, Soo Beng Damien Khoo, Kar Choon Ng, Nicholas Stephen Marchand | 2009-02-24 |
| D548726 | Loudspeaker device | Kar Choon Ng | 2007-08-14 |
| D535976 | Speaker | Kar Choon Ng | 2007-01-30 |