IPC Subgroup
A61B 3/1 Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
Introduced: September 1968
Last revised: January 2006
Full Title
Apparatus for testing the eyes; Instruments for examining the eyes > Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions
Classification Context
- Section:
- HUMAN NECESSITIES
- Class:
- MEDICAL OR VETERINARY SCIENCE; HYGIENE
- Subclass:
- DIAGNOSIS; SURGERY; IDENTIFICATION
9 direct subcodes
Child Classifications
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- A61B 3/103 for determining refraction, e.g. refractometers or 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
- 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 18,523
- NOVARTIS CH 14,253
- COVIDIEN US 13,953
- ROCHE CH 12,005
- CHINESE ACADEMY OF SCIENCES 11,955
- UNIVERSITY OF CALIFORNIA US 11,692
- HARVARD UNIVERSITY US 11,596
- L'OREAL FR 11,593
- P&G (PROCTER & GAMBLE COMPANY) US 11,297
- OLYMPUS CORPORATION JP 9,594