| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | EPO (European Patent Office) | 4 | |
| #3 | United Kingdom | 4 | |
| #4 | Japan | 2 | |
| #5 | Canada | 1 | |
| #6 | Germany | 1 | |
| #7 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Medical technology | |
| #2 | Machines | |
| #3 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Dentistry | |
| #2 | Certain plastics | |
| #3 | Brushes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wu Ka Shing | 10 |
| #2 | Hui Fung Kut | 4 |
| #3 | Chan Wai Shing | 3 |
| #4 | Shek Kwok Nam | 1 |
| #5 | Shek Kwok-Nam | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB0205769D0 | Mouth washing device | |
| FR2812804A1 | ELECTRIC TOOTHBRUSH | |
| US6182321B1 | Toothbrush | |
| GB9918081D0 | Electric toothbrush : drive to orbit head | |
| US6047429A | Toothbrush with water jet | |
| US5931170A | Dental flosser | |
| US5784743A | Electric toothbrushes | |
| US5732432A | Electric toothbrushes | |
| US5778474A | Mechanically driven toothbrush |