Inventor
NAKAI EISAKU
JP5 patents
⚠️ This page may combine multiple inventors who share the name “NAKAI EISAKU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIKKEN KOSAKUSHO WORKS LTD
4 patentsUS6923451B2Aug 2, 2005
Tool holder
NIKKEN KOSAKUSHO WORKS LTD38 citations91
US9333561B2May 10, 2016
Tool holder
NIKKEN KOSAKUSHO WORKS LTD8 citations80
US9238269B2Jan 19, 2016
End mill and shank structure of end mill
NIKKEN KOSAKUSHO WORKS LTD5 citations69
US12589439B2Mar 31, 2026
Tool holder and tool holding structure including the same
NIKKEN KOSAKUSHO WORKS LTD0 citations43