Inventor

OHKUBO TOSHIFUMI

JP4 patents

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

NIPPON TELEGRAPH & TELEPHONE

2 patents

US6729541B1May 4, 2004

Information reading apparatus and information recording medium

NIPPON TELEGRAPH & TELEPHONE33 citations91

US7368146B2May 6, 2008

Magneto-optical recording medium, manufacturing method thereof and magneto-optical data recording and playback device

NIPPON TELEGRAPH & TELEPHONE4 citations60

CT NAT DE LA RECH SCIENT INC

1 patent

US6759137B1Jul 6, 2004

Opto-magnetic recording medium with a garnet ferrite recording layer, and opto-magnetic information recording/reproducing device

CT NAT DE LA RECH SCIENT INC17 citations86

SEIKO INSTR INC

1 patent

US6785201B2Aug 31, 2004

Optical information recording and reading apparatus

SEIKO INSTR INC11 citations71