| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 4 | |
| #2 | EPO (European Patent Office) | 3 | |
| #3 | WIPO (World Intellectual Property Organization) | 3 | |
| #4 | Australia | 2 | |
| #5 | Brazil | 2 | |
| #6 | Israel | 2 | |
| #7 | South Africa | 2 | |
| #8 | Argentina | 1 | |
| #9 | Canada | 1 | |
| #10 | China | 1 | |
| #11 | Czechia | 1 | |
| #12 | Finland | 1 | |
| #13 | Hungary | 1 | |
| #14 | Netherlands | 1 | |
| #15 | Norway | 1 | |
| #16 | Turkey | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Machines | |
| #3 | Engines, pumps and turbines | |
| #4 | Electrical machinery and energy | |
| #5 | Semiconductors |
| # | Technology | |
|---|---|---|
| #1 | Centrifuges | |
| #2 | Separation | |
| #3 | Ignition for internal-combustion engines | |
| #4 | Semiconductor devices | |
| #5 | Spark gaps and corona devices | |
| #6 | Controlling combustion engines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rogers Ernest E | 11 |
| #2 | Collier Kevin E | 11 |
| #3 | Rogers Ernest | 9 |
| #4 | Norris Elwood G | 4 |
| Publication | Filing date | Title |
|---|---|---|
| US5387342A | Centrifugal separator and method | |
| US5464536A | Apparatus for centrifugally separating a fluid mixture into its component parts | |
| BR8207080A | Ignition system and process to inflammate a fuel / air mixture | |
| EP0109975A1 | Low voltage ignition control system | |
| US4412151A | Piezoelectric crystal spark plug |