| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | Australia | 1 | |
| #3 | Canada | 1 | |
| #4 | EPO (European Patent Office) | 1 | |
| #5 | Republic of Korea | 1 | |
| #6 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Control | |
| #3 | Machine tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Burgher Peter H | 12 |
| #2 | Boomer John | 10 |
| #3 | Ratliff David | 7 |
| #4 | Marsden Raymond F | 1 |
| #5 | Holmes Richard L | 1 |
| #6 | Boomer John L | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5523673A | Electrically controllable inductor | |
| US5051867A | Transformer assembly with exposed laminations and hollow housings | |
| US4956745A | Transformer assembly with exposed laminations and hollow housings | |
| US4703158A | High frequency welding system | |
| US4577085A | System of transformers for a welding apparatus | |
| US4496821A | Transformer for robot arms |