ER

Erkki A. Ruuskanen

AA A. Ahlstrom: 2 patents #47 of 166Top 30%
EO Enso-Gutzeit Oy: 1 patents #16 of 43Top 40%
📍 Valkeakoski, FI: #14 of 66 inventorsTop 25%
Overall (All Time): #1,298,516 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5139671 Apparatus for treating pulp Kaj Henricson, Seppo K. Kokkonen, Olavi Pikka, Harri Qvintus, Erkki Savolainen 1992-08-18
4952314 Apparatus for treating pulp Kaj Henricson, Seppo K. Kokkonen, Olavi Pikka, Harri Qvintus, Erkki Savolainen 1990-08-28
4795170 Packing arrangement for sealing the surface of a rotary drum like object Seppo K. Kokkonen, Harri Qvintus 1989-01-03
4202505 Refiner 1980-05-13