HV

Hannu Virtanen

Nokia: 1 patents #2,812 of 5,652Top 50%
📍 Helsinki, FI: #1,108 of 3,940 inventorsTop 30%
Overall (All Time): #1,596,868 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6843886 Method for handling filled reject flows in a paper or paperboard mill Mauno Huovinen 2005-01-18
6229724 Power supply circuit featuring secondary side microcontroller for controlling a primary side power factor correction circuit 2001-05-08
6202946 Method and apparatus of defibrating a fibre-containing material 2001-03-20