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CPC Subgroup
G09C 3/10

involving removable or interchangeable coding members, e.g. master tapes, punched cards

Full Title

Typewriters for ciphering or deciphering cryptographic text (marking record carriers G06K) > wherein the operative connections between the keys and the type-bars are automatically and continuously permuted, during operation, by a coding or key member > involving removable or interchangeable coding members, e.g. master tapes, punched cards

Filing statistics

CPC G09C 3/10 belongs to the parent subclass G09C, which recorded 8,268 patent applications worldwide between 2013 and 2023. Annual filings declined from 600 in 2013 to 312 in 2023 (-48%), peaking at 1,116 applications in 2015. The most active applicants in class G09 are SAMSUNG DISPLAY (22,477 applications), BOE TECHNOLOGY GROUP COMPANY (16,016 applications) and BOE TECHNOLOGY GROUP COMPANY (12,918 applications).

Source: EPO PATSTAT, worldwide filings

Top Applicants

Top 10 applicants by patent filingsfor 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