Inventor

HIROTA RYOICHI

3 patents

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

HITACHI LTD

2 patents

US4142131AFeb 27, 1979

Color picture tube

HITACHI LTD29 citations81

US4096462AJun 20, 1978

Deflection yoke device for use in color television receiver sets

HITACHI LTD5 citations60

PIONEER ELECTRONIC CORP

1 patent

US5179547AJan 12, 1993

Phase change optical information recording medium including means for preventing movement of the recorded portion

PIONEER ELECTRONIC CORP21 citations89