KS

Katsumi Seki

HI Hitachi: 1 patents #17,742 of 28,497Top 65%
NO Nippon Oil: 1 patents #392 of 773Top 55%
Overall (All Time): #2,337,915 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4759861 Metal working lubricant Shigetoshi Ogura, Hiroyuki Takashima 1988-07-26
4389310 Cold trap Yasuo Tachi, Yoji Shibata 1983-06-21