Inventor

TOKUMOTO YOSHIYUKI

JP2 patents

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

SONY CORP

1 patent

US7227831B2Jun 5, 2007

Recording medium, recording and reproduction apparatus, and recording and reproduction method

SONY CORP12 citations73

KAWASHIMA TETSUJI

1 patent

US8213284B2Jul 3, 2012

Multi-layered rewritable optical disc recording apparatus and recording method

KAWASHIMA TETSUJI0 citations40