KS

Keiichi Shibuya

SM Smc: 2 patents #375 of 737Top 55%
📍 Kashima, JP: #62 of 143 inventorsTop 45%
Overall (All Time): #2,217,048 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6433308 High vacuum valve Tsuneo Ishigaki, Mamoru Fukuda, Kenji Waragai 2002-08-13
5836568 High-vacuum valve Tsuneo Ishigaki 1998-11-17