TY

Toyohiko Youan

KO Komatsu: 4 patents #453 of 2,087Top 25%
Overall (All Time): #1,260,307 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
7128168 Reamer apparatus for ground boring machine 2006-10-31
6932171 Ground drilling machine Kentaro Watanabe, Eiichi Muramoto, Kazuyuki Yamazaki 2005-08-23
6913094 Leading body for ground drilling and ground drilling machine Kentaro Watanabe, Eiichi Muramoto, Touru Hishiyama 2005-07-05
6637525 Ground drilling machine and rod exchanger utilized therefor Kentaro Watanabe, Kazuyuki Yamazaki, Tooru Hishiyama 2003-10-28