Inventor

OKABAYASHI SHOICHI

JP2 patents

Patents

2 patents

US7218585B2May 15, 2007

Information medium and information recording/reproduction apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD56 citations92

US7352684B2Apr 1, 2008

Information medium and information recording and reproducing device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD0 citations48