Inventor

HATTORI KEIJI

JP3 patents

⚠️ This page may combine multiple inventors who share the name “HATTORI KEIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SHINKO WIRE CO LTD

2 patents

US5380407AJan 10, 1995

Method for facilitating distinction between different steel products

SHINKO WIRE CO LTD11 citations69

US5455121AOct 3, 1995

Steel material for a colored spring

SHINKO WIRE CO LTD3 citations59

HATTORI KEIJI

1 patent

US7101046B2Sep 5, 2006

Kaleidoscope and image material assembly for kaleidoscope

HATTORI KEIJI4 citations51