IPC Subgroup
G02B 5/28 Interference filters
Introduced: September 1968
Last revised: January 2006
Full Title
Optical elements other than lenses > Filters > Interference filters
Classification Context
- Section:
- PHYSICS
- Class:
- OPTICS
- Subclass:
- OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
Additional Content
Use of dichroic reflectors in lighting devices Use of dichroic filters in lighting devices
Related Keywords
optical filters using INTERFERENCE
Top Applicants
Top 10 applicants by patent filingsfor 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