Ernst Schwefel
12Patents
8h-index
8Co-inventors
61Inventor score
Filing activity: Jun 15, 1978 → Oct 24, 1989
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4225931A | Interpolation apparatus for digital electronic position measuring instrument | Electricity | 40 | Expired |
| US4462083A | Method of interval interpolation | Physics | 30 | Expired |
| US4575791A | Method for restarting a tool onto a workpiece contour | Physics | 20 | Expired |
| US4564912A | Numerical control system for determining tool withdrawal direction | Physics | 12 | Expired |
| US4229646A | Electronic counter for incremental measuring device | Electricity | 11 | Expired |
| US4521845A | Numerical control device | Physics | 9 | Expired |
| US4306220A | Interpolation utilization apparatus | Electricity | 9 | Expired |
| US4517657A | Integrated bit processor/word processor control system | Physics | 9 | Expired |
| US4412206A | Digital electrical length or angle measuring device | Electricity | 8 | Expired |
| US4330831A | Correction selection device | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5001340A | Angle measuring arrangement | Physics | 5 | Expired |
| US4760280A | Process and apparatus for the synchronization of square signals | Physics | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.