| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 3 | |
| #2 | Argentina | 2 | |
| #3 | Australia | 2 | |
| #4 | Brazil | 2 | |
| #5 | United States | 2 | |
| #6 | South Africa | 2 | |
| #7 | Italy | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Materials and metallurgy | |
| #3 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Cables and insulators | |
| #2 | Building materials | |
| #3 | Treatment of glass | |
| #4 | Resistors | |
| #5 | Separation | |
| #6 | Installation of electric cables |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nigol O | 6 |
| #2 | Nigol Olaf | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US3819851A | High voltage electrical insulator having an insulator body the entire surface of which is covered by a semiconductive glaze | |
| US3778527A | Means for preventing or inhibiting galloping vibrations in overhead transmission lines |