Inventor

OHKAWA HIROO

JP4 patents

Patents

4 patents

US5260542ANov 9, 1993

Laser Marking apparatus

HITACHI LTD35 citations92

US5157235AOct 20, 1992

Laser marking system

HITACHI LTD29 citations91

US6290824B1Sep 18, 2001

Magnetic film forming system

HITACHI LTD27 citations88

US6491802B2Dec 10, 2002

Magnetic film forming system

HITACHI LTD4 citations58