Inventor
OANA YOSHINORI
JP8 patents
⚠️ This page may combine multiple inventors who share the name “OANA YOSHINORI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOKYO OPTICAL
7 patentsUS4796989AJan 10, 1989
Opthalmological measuring apparatus
TOKYO OPTICAL30 citations92
US4453808AJun 12, 1984
Apparatus for detecting the position of a patient's eye in ophthalmologic instruments
TOKYO OPTICAL16 citations73
US4293199AOct 6, 1981
Apparatus for detecting astigmatic axes and measuring refractive powers
TOKYO OPTICAL14 citations71
US4810085AMar 7, 1989
Corneal configuration measuring apparatus
TOKYO OPTICAL4 citations62
US4408847AOct 11, 1983
Refractory power measuring device
TOKYO OPTICAL4 citations62
US4299455ANov 10, 1981
Vision testing instrument
TOKYO OPTICAL4 citations60
US4371237AFeb 1, 1983
Apparatus for measuring curvatures of a spherical surface
TOKYO OPTICAL0 citations48