| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Taiwan | 5 | |
| #2 | China | 4 | |
| #3 | Japan | 3 | |
| #4 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Hand carts |
| # | Name | Total Patents |
|---|---|---|
| #1 | Tsai Haiming | 7 |
| #2 | Tsai Hai-Ming | 4 |
| #3 | Haiming Cai | 1 |
| #4 | Tsai Haimin | 1 |
| Publication | Filing date | Title |
|---|---|---|
| TW201636247A | Pivoting seat of trolley | |
| TW201522140A | Trolley structure | |
| JP2013237431A | Handcart | |
| CN103386995A | Handcart with bearing plate and caster seats interlocked to each other | |
| TW201416279A | Structure improvement for the handle of trolley with retractable platform | |
| JP2012153354A | Handcart | |
| CN102649440A | Handcart structure | |
| US2008106053A1 | Handle positioning device for a hand truck |