The report contains ten-year analysis with the following sections
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Title of patent family (most common patent title) |
Family members |
Filing year |
---|---|---|
transformer with on-load tap-changing device | 21 | 2012 |
distribution transformer for voltage regulation of local distribution networks | 21 | 2012 |
control transformer | 20 | 2012 |
on-load tap changer comprising semiconductor switching elements | 19 | 2009 |
stepping switch with vacuum switching tubes | 19 | 2011 |
tap switch with semiconductor switching elements | 18 | 2008 |
tap switch | 18 | 2012 |
method for monitoring an on-load tap changer | 18 | 2012 |
on-load tap changer | 17 | 2012 |
stepping switch comprising vacuum switching tubes | 17 | 2009 |