SU

Shigeyoshi Umezawa

Sumitomo Electric Industries: 5 patents #5,365 of 21,551Top 25%
Overall (All Time): #1,038,169 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
6951404 Illumination knob and method of manufacturing knob Yoshiyuki Nakade 2005-10-04
6621224 Light-controlling device used for vehicle Tsurugi Sawai, Toshihiro Nomura, Yoshiyuki Nakade 2003-09-16
6580039 Multidirectional switch and operation unit using the same Yoshiyuki Nakade, Naoaki Matsui, Hitokazu Shitanaka 2003-06-17
6359243 Multi-directional operating switch and electronic device using the same Yoshiyuki Nakade, Hitokazu Shitanaka, Naoaki Matsui 2002-03-19
6329755 Light adjustment device for a vehicle Yoshiyuki Nakade, Masahiro Takamatsu, Shigeo Shigeyama 2001-12-11