HK

Heikki Kankkunen

RO Rakennusvalmiste Oy: 3 patents #1 of 2Top 50%
EO Elematic Oyj: 2 patents #4 of 12Top 35%
AA Addtek Research & Development Oy Ab: 1 patents #3 of 6Top 50%
Overall (All Time): #803,319 of 4,157,543Top 20%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
12162183 Method for manufacturing prefabricated concrete products 2024-12-10
10022892 Method and facility for cutting concrete product 2018-07-17
6841110 Method and plant for manufacturing prestressed concrete products Aimo Seppanen 2005-01-11
4751033 Method of compacting concrete by mutually synchronized reciprocating movements 1988-06-14
4674970 Ram casting machine for concrete slabs 1987-06-23
4674971 Concrete slab extruder with shear-action coring members 1987-06-23