| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 2 | |
| #2 | Canada | 2 | |
| #3 | China | 2 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | United States | 2 | |
| #6 | WIPO (World Intellectual Property Organization) | 2 | |
| #7 | Mexico | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Spark gaps and corona devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Krupa Robert | 13 |
| #2 | Lulavage Chester C | 11 |
| #3 | Chester | 1 |
| #4 | Lulavage C | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US6060822A | Spark plug | |
| US5936332A | Spark plug |