IPC Subgroup
G02B 13/02 Telephoto objectives, i.e. systems of the type + – in which the distance from the front vertex to the image plane is less than the equivalent focal length
Introduced: September 1968
Last revised: January 2006
Full Title
Optical objectives specially designed for the purposes specified below > Telephoto objectives, i.e. systems of the type + – in which the distance from the front vertex to the image plane is less than the equivalent focal length
Classification Context
- Section:
- PHYSICS
- Class:
- OPTICS
- Subclass:
- OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
Related Keywords
TELEPHOTO objectives
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