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CPC Main Group
G03F 1/00

Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof

15 direct subcodes

Child Classifications

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  • G03F 1/20 Masks or mask blanks for imaging by charged particle beam [CPB] radiation, e.g. by electron beam; Preparation thereof
  • G03F 1/36 Masks having proximity correction features; Preparation thereof, e.g. optical proximity correction [OPC] design processes
  • G03F 1/50 Mask blanks not covered by G03F1/20 - G03F1/34; Preparation thereof
  • G03F 1/52 Reflectors
  • G03F 1/60 Substrates
  • G03F 1/66 Containers specially adapted for masks, mask blanks or pellicles; Preparation thereof
  • G03F 1/88 prepared by photographic processes for production of originals simulating relief
  • G03F 1/90 prepared by montage processes
  • G03F 1/92 prepared from printing surfaces

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