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PCE
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Search for IPC and CPC classification codes or keywords
CPC Subgroup
G03B 9/18

More than two members

Full Title

Exposure-making shutters; Diaphragms > Shutters > Blade or disc rotating or pivoting about axis normal to its plane > More than two members

2 direct subcodes

Child Classifications

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  • G03B 9/20 each moving in a single direction first to open and then to reclose
  • G03B 9/22 each moving in one direction to open and then in opposite direction to close, e.g. iris type

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