Inventor
MATSUMURA ISAO
JP43 patents
⚠️ This page may combine multiple inventors who share the name “MATSUMURA ISAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CANON KK
38 patentsUS4372655AFeb 8, 1983
Automatic eye-refractometer
CANON KK56 citations96
US4265518AMay 5, 1981
Variable magnification apparatus having illumination compensating ability
CANON KK55 citations96
US5116114AMay 26, 1992
Ophthalmologic apparatus
CANON KK74 citations95
US4917458AApr 17, 1990
Cornea shape measuring apparatus
CANON KK29 citations93
US4674845AJun 23, 1987
Stereoscopic microscope with means for varying stereoscopic viewing angle
CANON KK39 citations93
US4283124AAug 11, 1981
Eye fundus camera
CANON KK39 citations93
US4279478AJul 21, 1981
Eye examining instrument
CANON KK50 citations93
US4257688AMar 24, 1981
Eye examining instrument
CANON KK48 citations93
US4253743AMar 3, 1981
Eye testing instrument
CANON KK47 citations93
US6801913B2Oct 5, 2004
Medical instrument control system
CANON KK33 citations92
US5056522AOct 15, 1991
Supersonic ophthalmic measuring apparatus
CANON KK40 citations92
US5037194AAug 6, 1991
Ophthalmologic apparatus and method of compounding the image of an eye to be examined
CANON KK36 citations92
US4991584AFeb 12, 1991
Ophthalmic examining apparatus and method capable of examining glaucoma
CANON KK27 citations92
US4690525ASep 1, 1987
Eye fundus camera
CANON KK37 citations92
US4678297AJul 7, 1987
Ophthalmic instrument
CANON KK36 citations92
US4421391ADec 20, 1983
Auto eye-refractometer
CANON KK49 citations92
US4376573AMar 15, 1983
Apparatus for measuring the refractive power of the eye
CANON KK49 citations92
US4102563AJul 25, 1978
Eye fundus camera free from undesired reflected and diffused light beams
CANON KK41 citations92
US4787734ANov 29, 1988
Stereoscopic microscope
CANON KK19 citations82
US4657356AApr 14, 1987
Stereoscopic microscope with a pair of image rotation correcting means
CANON KK23 citations82
US4572627AFeb 25, 1986
Eye fundus camera
CANON KK24 citations82
US4318585AMar 9, 1982
Optical system with an afocal focusing group
CANON KK24 citations82
US4251139AFeb 17, 1981
Eye examining instrument
CANON KK28 citations82
US4196979AApr 8, 1980
Method and device for detecting distance between eye-examining instrument and eye
CANON KK23 citations82
US4146310AMar 27, 1979
Ophthalmoscopic optical system
CANON KK26 citations82
US4132466AJan 2, 1979
Ophthalmoscopic optical system
CANON KK20 citations82
US4068932AJan 17, 1978
Optical instrument for examining the eye fundus
CANON KK29 citations82
US3936844AFeb 3, 1976
Eye-fundus camera easy for alignment of pupil
CANON KK24 citations82
US5066117ANov 19, 1991
Perimeter
CANON KK19 citations74
US5018851AMay 28, 1991
Slit illuminating apparatus
CANON KK15 citations74
US4999009AMar 12, 1991
Device for use with a cornea shape measuring apparatus
CANON KK8 citations74
US4867554ASep 19, 1989
Surface examining apparatus
CANON KK18 citations74
US4699481AOct 13, 1987
Stereoscopic microscope
CANON KK10 citations74
US4620779ANov 4, 1986
Ophthalmologic apparatus
CANON KK8 citations74
US4813778AMar 21, 1989
Ophthalmic positioning apparatus
CANON KK13 citations73
US4762410AAug 9, 1988
Ophthalmic instrument
CANON KK16 citations73
US4098549AJul 4, 1978
Eye bottom camera
CANON KK6 citations63
US6702441B2Mar 9, 2004
Ophthalmic measuring device
CANON KK1 citations52