HO

Hidefumi Otsuka

Sumitomo Electric Industries: 3 patents #7,735 of 21,551Top 40%
HI Hitachi: 1 patents #17,742 of 28,497Top 65%
HC Hitachi Koki Co.: 1 patents #557 of 888Top 65%
MC Matushita Electric Industrial Co.: 1 patents #3 of 106Top 3%
📍 Ibaraki, JP: #1,893 of 6,779 inventorsTop 30%
Overall (All Time): #1,041,849 of 4,157,543Top 30%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
6654299 Semiconductor device Tomonori Fujimoto 2003-11-25
6556491 Semiconductor storage device and method of testing the same Yuji Yamasaki 2003-04-29
6295243 Semiconductor device Tomonori Fujimoto 2001-09-25
6175529 Semiconductor integrated circuit device and method for manufacturing the same Shoji Sakamoto, Yuji Yamasaki 2001-01-16
5021810 Printing machine Katsumi Muroi, Kenji Okuna, Kastubumi Ouchi, Tsutomu Iimura, Ryoji Kojima 1991-06-04