| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 3 | |
| #2 | Australia | 2 | |
| #3 | Brazil | 2 | |
| #4 | Canada | 2 | |
| #5 | China | 2 | |
| #6 | EAPO (Eurasian Patent Organization) | 2 | |
| #7 | Norway | 2 | |
| #8 | United States | 2 | |
| #9 | African Regional Industrial Property Organization | 1 | |
| #10 | Argentina | 1 | |
| #11 | Costa Rica | 1 | |
| #12 | Ecuador | 1 | |
| #13 | Hong Kong | 1 | |
| #14 | Israel | 1 | |
| #15 | Republic of Korea | 1 | |
| #16 | Morocco | 1 | |
| #17 | New Zealand | 1 | |
| #18 | African Intellectual Property Organization | 1 | |
| #19 | Panama | 1 | |
| #20 | Peru | 1 | |
| #21 | Tunisia | 1 | |
| #22 | Taiwan | 1 | |
| #23 | WIPO (World Intellectual Property Organization) | 1 | |
| #24 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Electric discharge tubes | |
| #2 | Electric machines not otherwise provided for | |
| #3 | Plasma technique |
| # | Name | Total Patents |
|---|---|---|
| #1 | Davis Edwin D | 27 |
| #2 | Davis D Edwin | 1 |
| #3 | Edwin D Davis | 1 |
| #4 | Davies Edwin D | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ZA200603357B | Thermionic electric converter | |
| NZ546687A | Thermionic electric converter | |
| KR20060105751A | Thermionic electric converter | |
| OA13276A | Thermionic electric converter. | |
| US5942834A | Thermionic electric converters |