CHAO DAVID YINKAI has a total of 14 patent applications. Its first patent ever was published in 1997. It filed its patents most often in Australia, EPO (European Patent Office) and China. Its main competitors in its focus markets optics are 21 TWO ONE CO LTD, EXCEL GANKYO KK and FERGAFLEX INC.
| # | Industry | |
|---|---|---|
| #1 | Optics |
| # | Technology | |
|---|---|---|
| #1 | Spectacles |
| # | Name | Total Patents |
|---|---|---|
| #1 | Chao David Yinkai | 14 |
| Publication | Filing date | Title |
|---|---|---|
| AU2003100372B4 | Eyeglass combination having auxiliary frame | |
| AU2002300907B2 | Eyeglass combination having auxiliary frame | |
| AU2001100107A4 | Eyeglass combination having auxiliary frame | |
| DE19710924A1 | Glasses frames |