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CPC Main Group
G09D 3/00

Perpetual calendars

Filing statistics

CPC G09D 3/00 belongs to the parent subclass G09D, which recorded 203 patent applications worldwide between 2013 and 2023. Annual filings declined from 22 in 2013 to 12 in 2023 (-45%), peaking at 30 applications in 2016. 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

3 direct subcodes

Child Classifications

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  • G09D 3/02 with interchangeable members bearing the indicia
  • G09D 3/12 electrically operated

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