Willi Klappert
21Patents
8h-index
4Co-inventors
68Inventor score
Filing activity: Jul 14, 1975 → Nov 22, 1994
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4734975A | Method of manufacturing an amorphous metal transformer core and coil assembly | Emerging Cross-Sectional Technologies | 51 | Expired |
| US4789849A | Amorphous metal transformer core and coil assembly | Electricity | 21 | Expired |
| US3955264A | Core steel stacking machine | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5093981A | Method for making a transformer core comprising amorphous metal strips surrounding the core window | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4646048A | Core and winding assembly with relieved core edges and method of manufacture thereof | Electricity | 11 | Expired |
| US5285565A | Method for making a transformer core comprising amorphous steel strips surrounding the core window | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5063654A | Method for making packets of amorphous metal strip for transformer-core manufacture | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4724592A | Method of manufacturing a core and winding assembly | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5050294A | Method for making a transformer core comprising amorphous steel strips surrounding the core window | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5528817A | Apparatus for making packets of amorphous steel strip for transformer core manufacture | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4790064A | Method of manufacturing an amorphous metal transformer core and coil assembly | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4024486A | Outer locking turn for precut core | Electricity | 7 | Expired |
| US5315754A | Method of making a transformer core comprising strips of amorphous steel wrapped around the core window | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4467632A | Method of making a wound core for an electric transformer | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5291648A | Apparatus for making a transformer core comprising amorphous metal strips surrounding the core window | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5230139A | Method of making a transformer core comprising strips of amorphous steel wrapped around the core window | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5191700A | Method for making packets of amorphous metal strip for transformer-core manufacture | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5321883A | Apparatus for making a transformer core comprising strips of amorphous stell wrapped around the core window | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4570141A | Wound core for an electric transformer | Electricity | 2 | Expired |
| US5347706A | Method for making packets of amorphous steel strip for transformer core manufacture | Emerging Cross-Sectional Technologies | 1 | Expired |
| US5548887A | Method of making a transformer core from strips of amorphous steel | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.