| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Taiwan | 4 | |
| #2 | United States | 4 | |
| #3 | Germany | 2 | |
| #4 | United Kingdom | 1 | |
| #5 | Italy | 1 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games | |
| #2 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Toys | |
| #2 | Special musical instruments |
| # | Name | Total Patents |
|---|---|---|
| #1 | Chen Chen-Tsung | 7 |
| #2 | Chen Chen Tsung | 4 |
| #3 | Chen-Tsung Chen | 1 |
| Publication | Filing date | Title |
|---|---|---|
| TW201015806A | Can quickly replace the terminal tool structure | |
| US4885972A | Toy Xylophone | |
| US4804350A | Polygonal ring-like toy building block having means for interconnecting plural blocks together in differing orientations, and elongate stacking members for stacking plural blocks for storage | |
| DE3635947A1 | Set of toy building blocks | |
| US4708684A | Toy building block set | |
| US4556394A | Toy building block set |