Inventor
KITAO IKUO
JP14 patents
⚠️ This page may combine multiple inventors who share the name “KITAO IKUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOKYO OPTICAL
8 patentsUS4859051AAug 22, 1989
Eye testing apparatus
TOKYO OPTICAL35 citations92
US4591247AMay 27, 1986
Eye refractometer
TOKYO OPTICAL18 citations73
US4306778ADec 22, 1981
Eye refractmeters using infrared rays
TOKYO OPTICAL12 citations73
US4367019AJan 4, 1983
Image rotating means for eye refractometers
TOKYO OPTICAL11 citations71
US4293199AOct 6, 1981
Apparatus for detecting astigmatic axes and measuring refractive powers
TOKYO OPTICAL14 citations71
US4848895AJul 18, 1989
Automatic eye refractive power measuring apparatus
TOKYO OPTICAL2 citations62
US4408847AOct 11, 1983
Refractory power measuring device
TOKYO OPTICAL4 citations62
US4277150AJul 7, 1981
Eye refractmeter
TOKYO OPTICAL6 citations60
TOPCON CORP
6 patentsUS5895314AApr 20, 1999
Lens shape measuring apparatus
TOPCON CORP23 citations91
US5071245ADec 10, 1991
Ocular refracting power measuring system
TOPCON CORP26 citations88
US4917480AApr 17, 1990
Eye refractive power measuring apparatus
TOPCON CORP13 citations73
US6019669AFeb 1, 2000
Lens shape measuring apparatus
TOPCON CORP13 citations72
US5210555AMay 11, 1993
Ocular refracting power measuring system
TOPCON CORP4 citations62
US5984763ANov 16, 1999
Lens shape measuring apparatus
TOPCON CORP4 citations61