KK

Kouichi Koyama

HI Hitachi: 1 patents #17,742 of 28,497Top 65%
Sumitomo Electric Industries: 1 patents #13,249 of 21,551Top 65%
Overall (All Time): #1,975,661 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
9588311 Optical-assembly manufacturing method, optical assembly, and optical connector unit Akira Furuya, Yasunori Murakami, Hiromi Nakanishi 2017-03-07
6700471 Fixing device of current transformer Nobuyuki Kakuda, Manabu Takamoto, Masahiro Shimokawa 2004-03-02