SU

Shigeyoshi Umezawa

Sumitomo Electric Industries: 2 patents #687 of 3,885Top 20%
Overall (2003): #42,962 of 273,478Top 20%
2
Patents 2003

Issued Patents 2003

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
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