Hiromichi Koyama

Sumitomo Electric Industries: 1 patents #1,290 of 3,632Top 40%

📍 Kasai, JP: #181 of 567 inventorsTop 35%

Overall (2005): #189,483 of 245,428Top 80%

Patents 2005

Issued Patents 2005

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
6906275	Movable contact unit, panel switch using the same and electronic equipment having the panel switch	Koji Sako	2005-06-14