| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | EPO (European Patent Office) | 2 | |
| #3 | Canada | 1 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Electrical machinery and energy | |
| #3 | Packaging and shipping |
| # | Technology | |
|---|---|---|
| #1 | Soldering, welding and flame cutting | |
| #2 | Handling thin material | |
| #3 | AC and DC conversion devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rothermel Ronald R | 6 |
| #2 | Taff James T | 3 |
| #3 | Lesher Howard D | 3 |
| #4 | Friedman Robert | 2 |
| #5 | Kimbrough Andrew G | 2 |
| #6 | Viri Donald P | 2 |
| #7 | Rothermel Ronald Richard | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4780594A | Method and apparatus for improved control of supply of filler material to a welding location | |
| US4631385A | Automated position detectors and welding system utilizing same | |
| US4344553A | Welding wire feed device | |
| US4386726A | Adapter for socket welds | |
| US4372474A | Full function in-place weld head | |
| US4301355A | Gas metal arc welding system | |
| US4019016A | Welding control systems | |
| US3916282A | Power converter with rapid response current limiter | |
| US3873798A | Crawling carriage |