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DIFF Subgroup
G09B 5/04

with audible presentation of the material to be studied (sound recording or reproducing G11B)

Introduced: September 1968

Title

Titles differ between systems:

IPC: with audible presentation of the material to be studied

CPC: with audible presentation of the material to be studied (sound recording or reproducing G11B)

Full Title

Full titles differ between systems:

IPC:

Electrically-operated educational appliances > with audible presentation of the material to be studied

CPC:

Electrically-operated educational appliances (working with questions and answers G09B7/00; simulators G09B9/00; advertising or displaying in general G09F) > with audible presentation of the material to be studied (sound recording or reproducing G11B)

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