MI

Masafumi Ishiyama

HO Hoya: 1 patents #17 of 87Top 20%
HP Hoya Magnetics Singapore Pte.: 1 patents #3 of 5Top 60%
Overall (2005): #146,047 of 245,428Top 60%
1
Patents 2005

Issued Patents 2005

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6946191 Magnetic recording medium Takashi Morikawa, Teiichiro Umezawa, Hiroshi Tomiyasu 2005-09-20