for the control of the colour (G02F1/03 - G02F1/21 take precedence)

Introduced: July 1974

Title

Titles differ between systems:

IPC: for the control of the colour

CPC: for the control of the colour (G02F1/03 - G02F1/21 take precedence)

Full Title

Full titles differ between systems:

IPC:

Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics > for the control of the intensity, phase, polarisation or colour > for the control of the colour

CPC:

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

IPC defines codes here since 1974.

Child Classifications

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G02F 1/25 as to hue or predominant wavelength since 1974 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class G02,2013–2023, worldwide · Source: EPO PATSTAT

BOE TECHNOLOGY GROUP COMPANY 13,460
BOE TECHNOLOGY GROUP COMPANY CN 11,745
SAMSUNG DISPLAY KR 10,908
CANON 9,072
FUJIFILM JP 7,957
SAMSUNG ELECTRONICS COMPANY KR 7,805
LG DISPLAY COMPANY KR 6,558
CHINESE ACADEMY OF SCIENCES 5,855
NITTO DENKO CORPORATION JP 5,817
OLYMPUS CORPORATION JP 4,579

Top Applicants (CPC)

Class G02,2013–2023, worldwide · Source: EPO PATSTAT

SAMSUNG DISPLAY KR 14,409
BOE TECHNOLOGY GROUP COMPANY CN 14,236
BOE TECHNOLOGY GROUP COMPANY 11,826
SAMSUNG ELECTRONICS COMPANY KR 10,141
FUJIFILM JP 8,506
LG DISPLAY COMPANY KR 7,558
NITTO DENKO CORPORATION JP 6,306
OLYMPUS CORPORATION JP 5,336
SONY CORPORATION JP 5,097
CANON JP 4,814