| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 3 | |
| #2 | Australia | 2 | |
| #3 | Brazil | 2 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | Japan | 2 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Macromolecular chemistry and polymers | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Optical systems | |
| #2 | Special macromolecular compounds | |
| #3 | Producing goods from plastic |
| # | Name | Total Patents |
|---|---|---|
| #1 | Chen Richard Y S | 7 |
| #2 | Richiyaado Wai Esu Chiyan | 1 |
| #3 | Richiyaado Wai Esu Chien | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4820747A | Gas permeable contact lens and method and materials for its manufacture | |
| US4822864A | Gas permeable contact lens and method and materials for its manufacture | |
| BR8802923A | Process for manufacturing a contact lens, matrix for manufacturing a contact lens and form for manufacturing a matrix | |
| US4812598A | Gas permeable contact lens and method and materials for its manufacture |