| # | Country | Total Patents | |
|---|---|---|---|
| #1 | WIPO (World Intellectual Property Organization) | 6 | |
| #2 | EPO (European Patent Office) | 5 | |
| #3 | United Kingdom | 4 | |
| #4 | United States | 3 | |
| #5 | Australia | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Materials and metallurgy | |
| #3 | Measurement | |
| #4 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Spark gaps and corona devices | |
| #2 | Alloys | |
| #3 | Measuring force, work and fluid pressure | |
| #4 | Supplying combustion engines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Burrows John Anthony | 10 |
| #2 | Tinwell Paul | 6 |
| #3 | Pino Alessandro | 3 |
| #4 | Freeman Simon | 3 |
| #5 | Freeman Simon Alexander | 2 |
| #6 | Coupland Duncan R | 1 |
| #7 | Orjela Gurdev | 1 |
| #8 | Burrows John | 1 |
| #9 | Hyde Robin | 1 |
| #10 | L Henoret Benjamin | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB0317671D0 | Spark plug | |
| AU2003251341A1 | Spark plug | |
| WO03028178A1 | Spark plug | |
| GB0127218D0 | Spark plug | |
| GB0008783D0 | Improved spark plug | |
| GB0005744D0 | Fuel injector |