CPC Subgroup
G09B 7/06 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
Full Title
Electrically-operated teaching apparatus or devices working with questions and answers (mechanically operated G09B3/00; computing arrangements G06F) > 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
5 direct subcodes
Child Classifications
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- G09B 7/07 providing for individual presentation of questions to a plurality of student stations
- G09B 7/08 characterised by modifying the teaching program in response to a wrong answer, e.g. repeating the question or supplying further information
- G09B 7/10 wherein a set of answers is common to a plurality of questions
Top Applicants
Top 10 applicants by patent filingsfor class G09, 2013–2023, worldwide · Source: EPO PATSTAT
- SAMSUNG DISPLAY KR 22,477
- BOE TECHNOLOGY GROUP COMPANY CN 16,016
- BOE TECHNOLOGY GROUP COMPANY 12,918
- LG DISPLAY COMPANY KR 12,599
- SAMSUNG ELECTRONICS COMPANY KR 12,009
- SAMSUNG DISPLAY 6,252
- SEMICONDUCTOR ENERGY LABORATORY COMPANY JP 4,410
- SONY CORPORATION JP 3,965
- LG ELECTRONICS KR 3,901
- LG DISPLAY COMPANY 3,705