CPC Subgroup
A61B 3/10 Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
Full Title
Apparatus for testing the eyes; Instruments for examining the eyes (eye inspection using ultrasonic, sonic or infrasonic waves A61B8/10) > Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
14 direct subcodes
Child Classifications
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- A61B 3/103 for determining refraction, e.g. refractometers, skiascopes
- A61B 3/107 for determining the shape or measuring the curvature of the cornea
- A61B 3/11 for measuring interpupillary distance or diameter of pupils
- A61B 3/113 for determining or recording eye movement
- A61B 3/117 for examining the anterior chamber or the anterior chamber angle, e.g. gonioscopes
- A61B 3/12 for looking at the eye fundus, e.g. ophthalmoscopes (A61B3/13 takes precedence)
- A61B 3/13 Ophthalmic microscopes
- A61B 3/14 Arrangements specially adapted for eye photography
- A61B 3/16 for measuring intraocular pressure, e.g. tonometers
Top Applicants
Top 10 applicants by patent filingsfor class A61, 2013–2023, worldwide · Source: EPO PATSTAT
- PHILIPS ELECTRONICS NL 20,621
- NOVARTIS CH 15,792
- ROCHE CH 14,303
- COVIDIEN US 13,862
- HARVARD UNIVERSITY US 13,454
- UNIVERSITY OF CALIFORNIA US 12,798
- P&G (PROCTER & GAMBLE COMPANY) US 12,140
- L'OREAL FR 11,800
- OLYMPUS CORPORATION JP 9,894
- BOSTON SCIENTIFIC SCIMED US 9,513