A61B 3/103 for determining refraction, e.g. refractometers, skiascopes
Introduced: January 1990
Title
Titles differ between systems:
IPC: for determining refraction, e.g. refractometers or skiascopes
CPC: for determining refraction, e.g. refractometers, skiascopes
Full Title
Full titles differ between systems:
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 > for determining refraction, e.g. refractometers or skiascopes
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 > for determining refraction, e.g. refractometers, skiascopes
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
Navigate with arrow keys, Enter to open
Top Applicants
Top Applicants (IPC)
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
Top Applicants (CPC)
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