YI

Yasuhisa Ishikura

Sumitomo Electric Industries: 1 patents #1,140 of 3,352Top 35%
TO Topcon: 1 patents #16 of 54Top 30%
Overall (2002): #34,973 of 266,432Top 15%
2
Patents 2002

Issued Patents 2002

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6481848 Ophthalmologic apparatus Kunihiko Hara, Hiroshi Iijima 2002-11-19
6439943 Manufacturing method of plasma display panel that includes adielectric glass layer having small particle sizes Masaki Aoki, Katsuyoshi Yamashita, Shinya Fujiwara, Yasuyuki Akata 2002-08-27