| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | Germany | 1 | |
| #3 | France | 1 | |
| #4 | United Kingdom | 1 | |
| #5 | Italy | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Mechanical elements | |
| #3 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Wheelchairs and sledges | |
| #2 | Gearing | |
| #3 | Non-positive-displacement pumps |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kuo Chih Tsung | 8 |
| #2 | Chen Cheng-Ho | 4 |
| Publication | Filing date | Title |
|---|---|---|
| US2013331221A1 | Multi-ratio transmission system with parallel vertical and coaxial planet gears | |
| ITMI940861D0 | Swivelling electric fan - has guiding disc which rotates so that supporting disc swivels to drive housing and vanes elliptically swivel | |
| GB9408254D0 | A swiveling electric fan |