VACON OYJ
62Patents
28Active
62Granted
45Portfolio score
Filing activity: Mar 2, 2001 → Jan 22, 2015 · 18 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD586744S1 | Frequency converter | General | 41 | Expired |
| USD654022S1 | Frequency converter | General | 30 | Expired |
| USD713336S1 | Frequency converter | General | 26 | Active |
| USD595225S1 | Frequency converter | General | 24 | Expired |
| USD706216S1 | Frequency converter | General | 20 | Active |
| US7327588B2 | Synchronization of parallel-connected inverter units or frequency converters | Electricity | 16 | Expired |
| US7773396B2 | Parallel connection of inverters | Electricity | 12 | Active |
| US7031161B2 | Cooling system for adjustable electric drive | Electricity | 10 | Expired |
| US7593244B2 | Limit for the harmonics of a current | Emerging Cross-Sectional Technologies | 10 | Active |
| US7430101B2 | Overvoltage protection of a frequency converter | Electricity | 9 | Expired |
| US7035123B2 | Frequency converter and its control method | Emerging Cross-Sectional Technologies | 9 | Expired |
| US7294989B2 | Frequency converter overvoltage protection | Electricity | 9 | Expired |
| US7061759B2 | Arrangement for the placement of frequency converters | Electricity | 8 | Expired |
| US6807074B2 | Control of an inverter | Electricity | 8 | Expired |
| US7176804B2 | Protection of power semiconductor components | Electricity | 7 | Expired |
| USD638793S1 | Frequency converter | General | 7 | Expired |
| US7023712B2 | Cooling arrangement in frequency converter | Electricity | 7 | Expired |
| US8553432B2 | Power transmission method and power transmission apparatus | Electricity | 6 | Active |
| US7038405B2 | Control of parallel operation of frequency converters or inverters | Electricity | 6 | Expired |
| US8242719B2 | Connection of an electric motor to a supply network | Electricity | 5 | Active |
| US7742321B2 | Measurement of the current of a frequency converter | Electricity | 5 | Active |
| US7859838B2 | Arrangement for placing a frequency converter in a cabinet | Electricity | 5 | Active |
| US7872885B2 | Power level balance of frequency converters connected in parallel | Electricity | 5 | Active |
| US7320359B2 | Liquid cooling element and connection arrangement of liquid cooling element | Electricity | 5 | Expired |
| US7804288B2 | Current measuring arrangement of a frequency converter | Electricity | 4 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.