Dieter Dohnal
40Patents
10h-index
31Co-inventors
75Inventor score
Filing activity: Mar 21, 1991 → Jun 24, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6060669A | Tap selector | Electricity | 37 | Expired |
| US5107200A | Load switch for a step transformer | Electricity | 29 | Expired |
| US6124726A | Method of monitoring a tap selector | Electricity | 21 | Expired |
| US6100674A | Method of monitoring a tap changer | Electricity | 17 | Expired |
| US6856122B2 | Thyristor tap changer | Electricity | 12 | Expired |
| US5266759A | Actuator for a step-transformer load switch | Electricity | 12 | Expired |
| US6091032A | Tap changer | Electricity | 12 | Expired |
| US5736827A | Motor driven step switch | Electricity | 11 | Expired |
| US7463010B2 | Multipoint switch | Electricity | 11 | Expired |
| US6087607A | Position signalling device | Electricity | 10 | Expired |
| US5128605A | Monitoring system for step-type switching transformer | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5165295A | End stop for stepper for step-type transformer | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6234106A | Position indicator | Electricity | 8 | Expired |
| US5523674A | Step switch | Electricity | 7 | Expired |
| US5786552A | Switching arrangement for load change-over switches of step switches and for selector switches | Electricity | 7 | Expired |
| US6518771B2 | Method of monitoring the contact burnoff in tap changers | Electricity | 6 | Expired |
| US6965217B2 | Tap changing assembly for power transformer | Electricity | 6 | Expired |
| US9165726B2 | Tap changer and vacuum switching tube for such a tap changer | Electricity | 5 | Active |
| US7656138B2 | Device for regulating electrical voltage | Physics | 5 | Active |
| US5694034A | Tap changer for a tapped or stepped transformer | Electricity | 5 | Expired |
| US8648587B2 | Arrangement of a stepping switch on a control transformer | Electricity | 4 | Active |
| US6529858B1 | Method of controlling step switches | Electricity | 4 | Expired |
| US5773970A | Tap changer with tickler coil for arcless tap changing | Electricity | 3 | Expired |
| US5516992A | Transformer tap changing and step switch assembly | Electricity | 3 | Expired |
| US8415987B2 | Tap switch with semiconductor switching elements | Electricity | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.