| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 3 | |
| #2 | Canada | 2 | |
| #3 | France | 2 | |
| #4 | Belgium | 1 | |
| #5 | Brazil | 1 | |
| #6 | Switzerland | 1 | |
| #7 | Germany | 1 | |
| #8 | Denmark | 1 | |
| #9 | Spain | 1 | |
| #10 | Finland | 1 | |
| #11 | United Kingdom | 1 | |
| #12 | Greece | 1 | |
| #13 | Ireland | 1 | |
| #14 | Israel | 1 | |
| #15 | Iceland | 1 | |
| #16 | Italy | 1 | |
| #17 | Republic of Korea | 1 | |
| #18 | Luxembourg | 1 | |
| #19 | Netherlands | 1 | |
| #20 | Norway | 1 | |
| #21 | New Zealand | 1 | |
| #22 | Portugal | 1 | |
| #23 | Sweden | 1 | |
| #24 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Optics | |
| #2 | Machines | |
| #3 | Medical technology | |
| #4 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Producing goods from plastic | |
| #2 | Optical systems | |
| #3 | Spectacles | |
| #4 | Diagnosis and surgery | |
| #5 | Grinding or polishing devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nuchman Benjamin | 20 |
| #2 | Whang Sang Y | 19 |
| #3 | Sang Y Whang | 1 |
| Publication | Filing date | Title |
|---|---|---|
| IE840938L | Contact lens | |
| US4580882A | Continuously variable contact lens | |
| US4074469A | Apparatus for manufacturing lenses | |
| US3609017A | Means for extending the range of keratometers | |
| CA914959A | Means for extending the range of keratometers |