RK

Ryoichi Koga

CC Citizen Watch Co.: 3 patents #353 of 1,225Top 30%
Sumitomo Electric Industries: 2 patents #9,741 of 21,551Top 50%
📍 Nara, JP: #789 of 2,795 inventorsTop 30%
Overall (All Time): #1,056,331 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
D361722 Wrist watch 1995-08-29
D361727 Wrist watch 1995-08-29
D361521 Wrist watch 1995-08-22
5396223 Earthquake detecting apparatus Hiroo Iwabuchi, Takashi Uno 1995-03-07
4563571 Electric water heating device with decreased mineral scale deposition Yutaka Takahashi 1986-01-07