LK

Leo Karkkainen

📍 Helsinki, FI: #633 of 3,940 inventorsTop 20%
Overall (All Time): #852,751 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
9020168 Apparatus and method for audio delivery with different sound conduction transducers Lance Williams, Peng Xie 2015-04-28
8912873 Magnetic shielding apparatus Jani Samuli Kuivallainen, Thomas Benedict Slotte 2014-12-16
8831248 Apparatus with directivity pattern Timothy J. Mellow 2014-09-09
8243967 Hand-held electronic device Ole Kirkeby, John P. May 2012-08-14
8005249 Ear canal signal converting method, ear canal transducer and headset Lauri Aarne Johannes Wirola 2011-08-23
7689248 Listening assistance function in phone terminals Päivi Valve, Juha Backman, Jari Petteri Sjoberg 2010-03-30