| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 2 | |
| #2 | Germany | 2 | |
| #3 | Taiwan | 2 | |
| #4 | United States | 2 | |
| #5 | China | 1 | |
| #6 | France | 1 | |
| #7 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Tools for connecting or disengaging | |
| #2 | Unspecified technologies | |
| #3 | Turning | |
| #4 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Shu Zu-Shung | 7 |
| #2 | Shu Zu Shung | 3 |
| #3 | Zu-Shung Shu | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2018185995A1 | Sleeve device for receiving bits | |
| CA2099486A1 | Tool with sliding sleeve for ratchet direction control | |
| DE4321263C1 | Ratchet screwdriver |