Inventor

YOSHIKAWA KEIZO

JP2 patents

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

TOKAI RYOKAKU TETSUDO KK

1 patent

US6155380ADec 5, 2000

Grease filling device for electric motor

TOKAI RYOKAKU TETSUDO KK10 citations65

IDEMITSU KOSAN CO

1 patent

US7950334B2May 31, 2011

Ground coil device for magnetic levitation railway and method for manufacture thereof

IDEMITSU KOSAN CO3 citations57