| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 8 | |
| #2 | Japan | 4 | |
| #3 | Australia | 2 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | United States | 2 | |
| #6 | China | 1 | |
| #7 | Hong Kong | 1 | |
| #8 | Mexico | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Water-closets with flushing devices | |
| #2 | Sanitary equipment |
| # | Name | Total Patents |
|---|---|---|
| #1 | Yeung Shu-Ki | 21 |
| #2 | Yeung Wang Sun V | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2009188032A1 | Tilting-bowl toilet | |
| CA2613173A1 | Tilting-bowl toilets | |
| CA2573220A1 | Tilting bowl toilet | |
| CA2221066A1 | Disinfecting toilet seat system | |
| CA2209796A1 | Tilting-bowl toilet | |
| MX9603716A | Non-flushing toilet system. | |
| CA2184158A1 | Fluid operated tilting bowl toilet |