Robert Hallgren
4Patents
4h-index
6Co-inventors
43Inventor score
Filing activity: Nov 20, 1985 → Oct 22, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6474535B1 | Welding method and apparatus | Emerging Cross-Sectional Technologies | 35 | Expired |
| US4683458A | Current-steering digital-to-analog converter for providing bi-directional currents through a load | Electricity | 21 | Expired |
| US4639619A | Electronic sampler switch | Electricity | 7 | Expired |
| US6926189B2 | Welding method and apparatus | Emerging Cross-Sectional Technologies | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.