Inventor

OBATA KOUJI

JP8 patents

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

HITACHI IND EQUIPMENT SYS

5 patents

US7112940B2Sep 26, 2006

Frequency converter, motor, motor drive system and maintenance method for motor drive system

HITACHI IND EQUIPMENT SYS14 citations91

US7663337B2Feb 16, 2010

Frequency converter, motor, motor drive system and maintenance method for motor drive system

HITACHI IND EQUIPMENT SYS0 citations51

US7511450B2Mar 31, 2009

Frequency converter, motor, motor drive system and maintenance method for motor drive system

HITACHI IND EQUIPMENT SYS0 citations51

US7408323B2Aug 5, 2008

Frequency converter, motor, motor drive system and maintenance method for motor drive system

HITACHI IND EQUIPMENT SYS0 citations51

US7202628B2Apr 10, 2007

Frequency converter, motor, motor drive system and maintenance method for motor drive system

HITACHI IND EQUIPMENT SYS0 citations51

CLARION CO LTD

2 patents

US9906766B2Feb 27, 2018

Imaging device

CLARION CO LTD8 citations81

US9131199B2Sep 8, 2015

Imaging apparatus capable of generating an appropriate color image

CLARION CO LTD3 citations59

OBATA KOUJI

1 patent

US8816694B2Aug 26, 2014

Apparatus and method for detecting partial discharge at turn-to-turn insulation in motor

OBATA KOUJI8 citations77