Inventor
ONUMA AKIRA
JP9 patents
⚠️ This page may combine multiple inventors who share the name “ONUMA AKIRA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
8 patentsUS5977515ANov 2, 1999
Underwater laser processing device including chamber with partitioning wall
HITACHI LTD126 citations96
US5938954AAug 17, 1999
Submerged laser beam irradiation equipment
HITACHI LTD100 citations96
US4396823AAug 2, 1983
Method of electrode current control in welding apparatus having a plurality of electrodes
HITACHI LTD65 citations95
US6225598B1May 1, 2001
Method of high frequency pulse arc welding and apparatus therefor
HITACHI LTD52 citations91
US5654992AAug 5, 1997
Method of repairing structural materials of nuclear reactor internals and apparatus therefor
HITACHI LTD25 citations91
US5687045ANov 11, 1997
Thin film magnetic head and production method thereof and magnetic disk drive equipped with this thin film magnetic head
HITACHI LTD30 citations90
US4454408AJun 12, 1984
Method for controlling arc welding and apparatus therefor
HITACHI LTD6 citations73
US5316617AMay 31, 1994
Thin film magnetic head and method of manufacturing the same
HITACHI LTD13 citations71