KK

Kyosuke Kai

SH Sumitomo Electric Hardmetal: 2 patents #166 of 278Top 60%
SN Sumitomo Electric Tool Net: 2 patents #6 of 10Top 60%
Overall (All Time): #1,808,682 of 4,157,543Top 45%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
11660691 Reamer Masashi YAMADA, Masaaki Jindai, Jun Okamoto, Futoshi Takeshita, Katsutoshi Fukuda 2023-05-30
11198187 Oil hole reamer Jun Okamoto, Futoshi Takeshita, Katsutoshi Fukuda, Masashi YAMADA 2021-12-14