Inventor
ANDOH HISASHI
JP16 patents
⚠️ This page may combine multiple inventors who share the name “ANDOH HISASHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
14 patentsUS5484686AJan 16, 1996
Optical recording media and information recording and reproducing units
HITACHI LTD21 citations92
US5475656ADec 12, 1995
Optical disk memory and information processing apparatus
HITACHI LTD25 citations92
US5420845AMay 30, 1995
Methods of varying optical properties, optical devices, information recording media and information recording methods and apparatuses
HITACHI LTD39 citations92
US5371730ADec 6, 1994
Optical memory and information processing apparatus
HITACHI LTD23 citations92
US5317556AMay 31, 1994
Information processing apparatus and optical head incorporated therein
HITACHI LTD21 citations92
US5311494AMay 10, 1994
Optical disk apparatus and optical head
HITACHI LTD48 citations92
US5187052AFeb 16, 1993
Optical recording medium
HITACHI LTD23 citations92
US4773059ASep 20, 1988
Information recording and reproducing apparatus having recording medium made of alloy which has at least two different crystalline structures in its solid state
HITACHI LTD30 citations92
US5572502ANov 5, 1996
Optical disk apparatus
HITACHI LTD38 citations91
US4836978AJun 6, 1989
Method for making vacuum circuit breaker electrodes
HITACHI LTD25 citations89
US4907015AMar 6, 1990
Thermal printing head
HITACHI LTD20 citations81
US5583840ADec 10, 1996
ROM type optical recording medium with a high reflectivity and an optical head operable on ROM, write-one and rewritable disk
HITACHI LTD14 citations73
US5274612ADec 28, 1993
Information processor and disk memory used in the same
HITACHI LTD13 citations73
USRE36624EMar 21, 2000
Optical recording media and information recording and reproducing units
HITACHI LTD3 citations62