| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | United Kingdom | 4 | |
| #3 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Textiles and paper | |
| #2 | Optics |
| # | Technology | |
|---|---|---|
| #1 | Typewriters | |
| #2 | Electrography |
| # | Name | Total Patents |
|---|---|---|
| #1 | Lui Pui Kuong | 11 |
| #2 | Law Yiu Cheong | 5 |
| #3 | Lui Pui-Kuong | 4 |
| #4 | Tang Zhao Hui | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB0606588D0 | Ink cartridge | |
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| US2006227187A1 | Ink cartridge | |
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