Inventor

OKUBO HITOSHI

JP3 patents

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

KONISHIROKU PHOTO IND

2 patents

US4951167AAug 21, 1990

Magnetic tape cassette with improved front cover supporting mechanism

KONISHIROKU PHOTO IND7 citations70

US5041939AAug 20, 1991

Magnetic tape cassette with leaf-shaped spring door closure mechanism

KONISHIROKU PHOTO IND1 citations49

NIPPON STEEL CORP

1 patent

US4697446AOct 6, 1987

Roll forming apparatus

NIPPON STEEL CORP33 citations88