| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 19 | |
| #2 | Canada | 12 | |
| #3 | Switzerland | 11 | |
| #4 | Mexico | 3 | |
| #5 | Netherlands | 3 | |
| #6 | Sweden | 3 | |
| #7 | Australia | 2 | |
| #8 | Belgium | 1 | |
| #9 | Brazil | 1 | |
| #10 | Germany | 1 | |
| #11 | EPO (European Patent Office) | 1 | |
| #12 | Finland | 1 | |
| #13 | Ireland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Optics | |
| #3 | Machine tools | |
| #4 | Materials and metallurgy | |
| #5 | Organic fine chemistry |
| # | Technology | |
|---|---|---|
| #1 | Spectacles | |
| #2 | Unspecified technologies | |
| #3 | Producing goods from plastic | |
| #4 | Optical systems | |
| #5 | Unspecified technologies | |
| #6 | Grinding or polishing devices | |
| #7 | Shaping of plastics | |
| #8 | Treatment of glass | |
| #9 | Certain plastics | |
| #10 | Heterocyclic compounds |
| # | Name | Total Patents |
|---|---|---|
| #1 | Dawson W Clifford | 7 |
| #2 | Nori Wai Shii Chiyuu | 5 |
| #3 | Canterbury Bradford | 4 |
| #4 | Laurin Bernard L | 4 |
| #5 | Jiyon Tei Uinsurotsupu | 4 |
| #6 | Winthrop John T | 4 |
| #7 | Smith Luther W | 3 |
| #8 | Rotenberg Don H | 3 |
| #9 | Bard George D | 3 |
| #10 | Cuffe Patricia M | 2 |
| Publication | Filing date | Title |
|---|---|---|
| JPH05134354A | Optical interchangeable plastic product | |
| JPH05134353A | Optical interchangeable plastic product | |
| CA1143518A | Method and apparatus for making plastic lenses | |
| CH638969A5 | Ophthalmic measurement device |