KO

Kazuhiko Ohnuma

TO Topcon: 4 patents #201 of 684Top 30%
HO Hoya: 1 patents #757 of 1,290Top 60%
Overall (All Time): #1,029,958 of 4,157,543Top 25%
5
Patents All Time

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
7360897 Fundus examination apparatus Hisao Kikuta, Yasufumi Fukuma, Takashi Shioiri, Hidetaka Aeba 2008-04-22
6814441 Apparatus for measurement of polarized distribution, polarizing filter for using therein and polarizing filter assembly Yasufumi Fukuma, Hidetaka Aeba 2004-11-09
6540357 Glaucoma diagnosis apparatus Yasufumi Fukuma, Hidetaka Aeba 2003-04-01
6409342 Glaucoma diagnosis apparatus and recording medium for glaucoma diagnosis Yasufumi Fukuma, Hidetaka Aeba 2002-06-25
5875017 Ocular optical system simulation apparatus Hua Qi, Atsuo Minato 1999-02-23