Christian Hammer
21Patents
3h-index
41Co-inventors
59Inventor score
Filing activity: Sep 13, 2006 → Sep 30, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9543096B2 | On-load tap changer | Electricity | 3 | Active |
| US8947188B2 | Tap changer and vacuum interrupter for such a tap changer | Electricity | 3 | Active |
| US9941064B2 | On-load tap changer, tap-changing transformer for voltage regulation and method for implementing tap changer in the tap-changing transformer | Electricity | 3 | Active |
| US10643802B2 | Selector for an on-load tap changer and on-load tap changer with load transfer switch and selector | Electricity | 3 | Active |
| US8700980B2 | Method for encoding a contactless switching system | Physics | 2 | Active |
| US8030583B2 | Switching arrangement | Electricity | 2 | Active |
| US7667354B2 | Sensor unit with safety system | Electricity | 1 | Active |
| US10147563B2 | On-load tap changer according to the reactor switching principle | Electricity | 1 | Active |
| US11120962B2 | Load transfer switch for an on-load tap changer and continuous main switch and disconnecting switch for same | Electricity | 1 | Active |
| US9293273B2 | Tap changer with vacuum interrupters | Electricity | 1 | Active |
| US9607781B2 | Tap changer and vacuum interrupter for a tap changer of this kind | Electricity | 1 | Active |
| US12087478B2 | Resistor assembly for tap changer and tap changer | Electricity | 0 | Active |
| US12406801B2 | On-load tap changer and method for actuating an on-load tap changer | Electricity | 0 | Active |
| US10483879B2 | On-load tap changer and method of and system for operating same | Electricity | 0 | Active |
| US11631554B2 | On-load tap changer and local network transformer having an on-load tap changer | Emerging Cross-Sectional Technologies | 0 | Active |
| US12142448B2 | Switch for an on-load tap changer and load transfer switch for an on-load tap changer | Electricity | 0 | Active |
| US11177086B2 | On-load tap changer, regulating transformer with on-load tap changer, and method for connecting an on-load tap changer | Electricity | 0 | Active |
| US10373771B2 | Tap-changer switching system and method of operating same | Electricity | 0 | Active |
| US9406434B2 | Distribution transformer for voltage regulation of local distribution networks | Electricity | 0 | Active |
| US8169308B2 | Method for checking the switching region of a touch-free switching system | Electricity | 0 | Active |
| US9373442B2 | On-load tap changer | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.