IPC Subgroup
G09B 7/07 providing for individual presentation of questions to a plurality of student stations
Introduced: July 1974
Last revised: January 2006
Full Title
Electrically-operated teaching apparatus or devices working with questions and answers > of the multiple-choice answer type, i.e. where a given question is provided with a series of answers and a choice has to be made from the answers > providing for individual presentation of questions to a plurality of student stations
Classification Context
- Section:
- PHYSICS
- Class:
- EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- Subclass:
- EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
2 direct subcodes
Child Classifications
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- G09B 7/073 all student stations being capable of presenting the same questions simultaneously
- G09B 7/077 different stations being capable of presenting different questions simultaneously
Top Applicants
Top 10 applicants by patent filingsfor class G09, 2013–2023, worldwide · Source: EPO PATSTAT
- SAMSUNG DISPLAY KR 16,046
- BOE TECHNOLOGY GROUP COMPANY 13,766
- BOE TECHNOLOGY GROUP COMPANY CN 12,804
- LG DISPLAY COMPANY KR 10,322
- SAMSUNG ELECTRONICS COMPANY KR 7,738
- SAMSUNG DISPLAY 5,172
- SEMICONDUCTOR ENERGY LABORATORY COMPANY 4,749
- SEMICONDUCTOR ENERGY LABORATORY COMPANY JP 3,417
- LG DISPLAY COMPANY 3,335
- SONY CORPORATION JP 3,179