Inventor
ANDO KEIKICHI
10 patents
⚠️ This page may combine multiple inventors who share the name “ANDO KEIKICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
9 patentsUS6636477B1Oct 21, 2003
Information recording medium and information recording device
HITACHI LTD37 citations92
US6383595B1May 7, 2002
Information recording medium
HITACHI LTD33 citations92
US4581579AApr 8, 1986
Optical magnetic-field measuring apparatus having improved temperature characteristics
HITACHI LTD43 citations92
US6806030B2Oct 19, 2004
Information recording medium and method for manufacturing information recording medium
HITACHI LTD11 citations73
US5404348AApr 4, 1995
Method for recording and reproducing information using at least two energy beams
HITACHI LTD8 citations72
US4532180AJul 30, 1985
Garnet film for ion-implanted magnetic bubble device
HITACHI LTD4 citations62
US4338372AJul 6, 1982
Garnet film for magnetic bubble device
HITACHI LTD2 citations62
US4267230AMay 12, 1981
Film for a magnetic bubble domain device
HITACHI LTD4 citations62
US4397912AAug 9, 1983
Garnet film for magnetic bubble element
HITACHI LTD1 citations52