YI

Yasumasa Ishiwata

HI Hitachi: 2 patents #13,388 of 28,497Top 50%
HC Hitachi Software Engineering Co.: 2 patents #91 of 502Top 20%
Overall (All Time): #2,277,572 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5502758 Mobile terminal position information detection method and system using the method Takuo Tsuzuki, Yasuhide Tabuchi 1996-03-26
5434904 Mobile termainal position information detection method and system using the method Takuo Tsuzuki, Yasuhide Tabuchi 1995-07-18