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CPC Subgroup
G03B 9/04

Single movable plate with two or more apertures of graded size, e.g. sliding plate or pivoting plate

Full Title

Exposure-making shutters; Diaphragms > Diaphragms > Single movable plate with two or more apertures of graded size, e.g. sliding plate or pivoting plate

Top Applicants

Top 10 applicants by patent filingsfor class G03, 2013–2023, worldwide · Source: EPO PATSTAT

  1. CANON JP 19,215
  2. CANON 12,916
  3. ASML NETHERLANDS NL 10,000
  4. FUJIFILM JP 7,814
  5. SAMSUNG ELECTRONICS COMPANY KR 5,181
  6. CARL ZEISS SMT DE 5,079
  7. RICOH COMPANY JP 4,343
  8. LG INNOTEK COMPANY KR 4,054
  9. KYOCERA DOCUMENT SOLUTIONS 3,812
  10. KYOCERA DOCUMENT SOLUTIONS JP 3,682