KO

Kiyotaka Ojima

HM Hitachi Maxell: 1 patents #659 of 1,211Top 55%
📍 Ibaraki, JP: #4,343 of 6,779 inventorsTop 65%
Overall (All Time): #3,890,628 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5068144 Perpendicular magnetic recording medium and method for producing the same Osamu Kitakami, Hideo Fujiwara, Youichi Ogawa, Kunio Wakai 1991-11-26