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PCE
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DIFF Subgroup
G09B 7/04

characterised by modifying the teaching program in response to a wrong answer, e.g. repeating the question or supplying a further explanation

Introduced: September 1968

Title

Titles differ between systems:

IPC: characterised by modifying the teaching programme in response to a wrong answer, e.g. repeating the question or supplying a further explanation

CPC: characterised by modifying the teaching program in response to a wrong answer, e.g. repeating the question or supplying a further explanation

Full Title

Full titles differ between systems:

IPC:

Electrically-operated teaching apparatus or devices working with questions and answers > of the type wherein the student is expected to construct an answer to the question which is presented or wherein the machine gives an answer to the question presented by the student > characterised by modifying the teaching programme in response to a wrong answer, e.g. repeating the question or supplying a further explanation

CPC:

Electrically-operated teaching apparatus or devices working with questions and answers (mechanically operated G09B3/00; computing arrangements G06F) > of the type wherein the student is expected to construct an answer to the question which is presented or wherein the machine gives an answer to the question presented by a student > characterised by modifying the teaching program in response to a wrong answer, e.g. repeating the question or supplying a further explanation

No child classifications to compare. This is a leaf node in both IPC and CPC.

Top Applicants

Top Applicants (IPC)

Class G09,2013–2023, worldwide · Source: EPO PATSTAT

  1. SAMSUNG DISPLAY KR 16,046
  2. BOE TECHNOLOGY GROUP COMPANY 13,766
  3. BOE TECHNOLOGY GROUP COMPANY CN 12,804
  4. LG DISPLAY COMPANY KR 10,322
  5. SAMSUNG ELECTRONICS COMPANY KR 7,738
  6. SAMSUNG DISPLAY 5,172
  7. SEMICONDUCTOR ENERGY LABORATORY COMPANY 4,749
  8. SEMICONDUCTOR ENERGY LABORATORY COMPANY JP 3,417
  9. LG DISPLAY COMPANY 3,335
  10. SONY CORPORATION JP 3,179

Top Applicants (CPC)

Class G09,2013–2023, worldwide · Source: EPO PATSTAT

  1. SAMSUNG DISPLAY KR 22,477
  2. BOE TECHNOLOGY GROUP COMPANY CN 16,016
  3. BOE TECHNOLOGY GROUP COMPANY 12,918
  4. LG DISPLAY COMPANY KR 12,599
  5. SAMSUNG ELECTRONICS COMPANY KR 12,009
  6. SAMSUNG DISPLAY 6,252
  7. SEMICONDUCTOR ENERGY LABORATORY COMPANY JP 4,410
  8. SONY CORPORATION JP 3,965
  9. LG ELECTRONICS KR 3,901
  10. LG DISPLAY COMPANY 3,705