Inventor

OKAMOTO KENJIRO

JP4 patents

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

NIHON DENSAN KK

1 patent

US5402023AMar 28, 1995

Spindle motor and magnetic fluid seal apparatus used therefor

NIHON DENSAN KK25 citations90

NIDEC CORP

1 patent

US5574342ANov 12, 1996

Brushless motor

NIDEC CORP22 citations88

OKAMOTO KENJIRO

1 patent

US8582293B2Nov 12, 2013

Portable electronic apparatus

OKAMOTO KENJIRO6 citations63

NIPPON CORP

1 patent

US5521349AMay 28, 1996

Projection welding method

NIPPON CORP4 citations58