| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 3 | |
| #2 | Canada | 2 | |
| #3 | WIPO (World Intellectual Property Organization) | 2 | |
| #4 | Australia | 1 | |
| #5 | EPO (European Patent Office) | 1 | |
| #6 | Hong Kong | 1 | |
| #7 | Malaysia | 1 | |
| #8 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Optics |
| # | Technology | |
|---|---|---|
| #1 | Spectacles |
| # | Name | Total Patents |
|---|---|---|
| #1 | Liu Ting Kin | 4 |
| #2 | Liu Tingkin | 3 |
| #3 | Liu Mr Ting Kin | 1 |
| #4 | Liu T | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB0404053D0 | Auxiliary spectacles lenses frame | |
| GB0311172D0 | Eyeglass mount | |
| GB0303149D0 | Eyeglass mount | |
| HK1037105A2 | Improvements in or relating to a combination spectacle frame | |
| WO03001269A1 | Improvements in or relating to a combination spectacle frame | |
| AU5368499A | Pivotable auxiliary lenses frame and primary lenses frame for eyeglasses with magnetic clip-on mechanism | |
| MY133142A | Spectacle frame combination of a primary lenses frame and an auxiliary lenses frame magnetically and provotably attached thereto |