Inventor

SONOBE TAKEO

JP7 patents

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

HITACHI MAXELL

2 patents

US5040167AAug 13, 1991

Disk cartridge

HITACHI MAXELL29 citations92

US5072438ADec 10, 1991

Optical information recording disc and apparatus for driving the disc

HITACHI MAXELL18 citations70

UNIV CALIFORNIA

2 patents

US5410676AApr 25, 1995

Information system using designating areas for retrieving/converting data and directories of different formats storing in optical and magnetic storage

UNIV CALIFORNIA96 citations91

US5471606ANov 28, 1995

Information storage and processing

UNIV CALIFORNIA19 citations77

HITACHI LTD

2 patents

US4796140AJan 3, 1989

Removable disk construction

HITACHI LTD15 citations69

US4992893AFeb 12, 1991

Alignment disk for magnetic disk driving apparatus and method and apparatus for verifying tracking error of the magnetic disk driving apparatus

HITACHI LTD8 citations68

SONOBE TAKEO

1 patent

US7447567B2Nov 4, 2008

Electric power system suppressing corona discharge from viewpoint of environment

SONOBE TAKEO1 citations43