RA

Ryohei Ashihara

Sumitomo Electric Industries: 1 patents #1,140 of 3,352Top 35%
Overall (2002): #123,976 of 266,432Top 50%
1
Patents 2002

Issued Patents 2002

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6500584 Manganese dry batteries Tetsuya Kobayashi, Keiji Ogino, Michiko Inui 2002-12-31