EN

Etsuro Nakao

FF Firma Carl Freudenberg: 1 patents #255 of 512Top 50%
JC Japan Vilene Company: 1 patents #56 of 154Top 40%
📍 Moriyama, JP: #1,164 of 2,577 inventorsTop 50%
Overall (All Time): #2,348,471 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4592815 Method of manufacturing an electret filter — 1986-06-03
4551402 Electrode separator for an electric cell Tadashi Tamura, Hiroaki Yamazaki 1985-11-05