Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7654764 | Ring binder mechanism having blocking device | — | 2010-02-02 |
| 6382863 | Ring binder with compact disk holder | Keung Chan | 2002-05-07 |
| 6146042 | Sheet retaining device and method of packaging sheet retaining devices | Weng Io Ng | 2000-11-14 |
| 6109813 | Ring binder with divided housings | Weng Io Ng | 2000-08-29 |
| 5924811 | Assembling and disassembling device for ring binders | Chun Yuen To, Weng Io Ng, Kung-Hua CHENG, Wen Xu | 1999-07-20 |