David A. Tatham
9Patents
6h-index
24Co-inventors
63Inventor score
Filing activity: Apr 8, 1991 → Jun 20, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5189277A | Modular, stackable plasma cutting apparatus | Electricity | 267 | Expired |
| US6960737B2 | Gas flow pre-charge for a plasma arc torch | Electricity | 31 | Expired |
| US5170030A | Plasma torch electronic pulsing circuit | Electricity | 23 | Expired |
| US5530220A | Plasma torch arc transfer circuit | Electricity | 20 | Expired |
| US5990443A | Plasma torch pilot arc circuit | Performing Operations; Transporting | 17 | Expired |
| USRE37608E1 | Plasma torch electronic pulsing circuit | General | 7 | Expired |
| US6670572B2 | Solenoid control and safety circuit system and method | Electricity | 6 | Expired |
| US10420200B2 | Automated gas cutting system with auxiliary torch | Electricity | 1 | Active |
| US10616988B2 | Electromechanical linearly actuated electrode | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.