YK

Yoshimi Kohayakawa

Canon: 56 patents #559 of 19,416Top 3%
Overall (All Time): #43,459 of 4,157,543Top 2%
57
Patents All Time

Issued Patents All Time

Showing 1–25 of 57 patents

Patent #TitleCo-InventorsDate
6757555 Ophthalmologic apparatus 2004-06-29
6685318 Ophthalmologic apparatus 2004-02-03
6309068 Eye examining apparatus 2001-10-30
6304723 Retinal camera 2001-10-16
6131574 Ophthalmological apparatus 2000-10-17
6079830 Eye measuring apparatus having signal processing means for calculating eye information 2000-06-27
5995759 Stereoscopic image apparatus 1999-11-30
5903336 Eye examining apparatus having a driver for driving an eye examining system 1999-05-11
5889577 Optical apparatus or apparatus for detecting direction of line of sight, and various kinds of same apparatus using the same 1999-03-30
5847805 Scan imaging device for forming a stereoscopic image of the eye Kazuhiro Matsumoto 1998-12-08
5825460 Visual function measuring apparatus 1998-10-20
5781275 Eye refractometer and eye refractive power measuring apparatus for electro-optically measuring the refractive power of the eye 1998-07-14
5777718 Eye refractometer 1998-07-07
5757463 Eye examining apparatus scanning the eye with a light beam 1998-05-26
5713047 Eye fundus photographing apparatus 1998-01-27
5675399 Ophthalmic apparatus 1997-10-07
5657116 Ocular lens measuring apparatus 1997-08-12
5585872 Ophthalmic measuring apparatus for determining the shape of the cornea of an eye 1996-12-17
5557321 Fundus camera or opthalmic apparatus comprising a flash light source system Takeshi Kitamura 1996-09-17
5523809 Eye refraction measuring apparatus including optical path separating member light beam separating member, and/or light diameter changing means 1996-06-04
5523808 Ophthalmic apparatus having an intraocular pressure measuring system 1996-06-04
5506632 Ophthalmologic apparatus having an electrical magnifier 1996-04-09
5489978 Lens measuring apparatus Toshiaki Okumura 1996-02-06
5483305 Eye examining apparatus 1996-01-09
5467151 Eye refractometer having variable wavelength illumination means 1995-11-14