Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates

Filing statistics

CPC G02F 2413/00 belongs to the parent subclass G02F, which recorded 256,497 patent applications worldwide between 2013 and 2023. Annual filings declined from 20,929 in 2013 to 16,823 in 2023 (-20%), peaking at 28,806 applications in 2017. The most active applicants in class G02 are SAMSUNG DISPLAY (14,409 applications), BOE TECHNOLOGY GROUP COMPANY (14,236 applications) and BOE TECHNOLOGY GROUP COMPANY (11,826 applications).

Source: EPO PATSTAT, worldwide filings

13 direct subcodes

Child Classifications

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G02F 2413/01 Number of plates being 1
G02F 2413/02 Number of plates being 2
G02F 2413/03 Number of plates being 3
G02F 2413/04 Number of plates greater than or equal to 4
G02F 2413/05 Single plate on one side of the LC cell
G02F 2413/06 Two plates on one side of the LC cell
G02F 2413/07 All plates on one side of the LC cell
G02F 2413/08 with a particular optical axis orientation
G02F 2413/10 with refractive index ellipsoid inclined, or tilted, relative to the LC-layer surface O plate
G02F 2413/12 Biaxial compensators
G02F 2413/13 Positive birefingence
G02F 2413/14 Negative birefingence
G02F 2413/15 with twisted orientation, e.g. comprising helically oriented LC-molecules or a plurality of twisted birefringent sublayers

Top Applicants

Top 10 applicants by patent filingsfor 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