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PCE
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DIFF Subgroup
G03B 27/50

with slit or like diaphragm moving over original for progressive exposure (G03B27/34 takes precedence )

Introduced: September 1968

Title

Titles differ between systems:

IPC: with slit or like diaphragm moving over original for progressive exposure

CPC: with slit or like diaphragm moving over original for progressive exposure (G03B27/34 takes precedence )

Full Title

Full titles differ between systems:

IPC:

Photographic printing apparatus > Projection printing apparatus, e.g. enlarger, copying camera > with slit or like diaphragm moving over original for progressive exposure

CPC:

Photographic printing apparatus > Projection printing apparatus, e.g. enlarger, copying camera > with slit or like diaphragm moving over original for progressive exposure (G03B27/34 takes precedence )

No child classifications to compare. This is a leaf node in both IPC and CPC.

Top Applicants

Top Applicants (IPC)

Class G03,2013–2023, worldwide · Source: EPO PATSTAT

  1. CANON 31,416
  2. CANON JP 17,469
  3. KYOCERA DOCUMENT SOLUTIONS 9,845
  4. RICOH COMPANY 9,807
  5. ASML NETHERLANDS NL 9,427
  6. FUJIFILM JP 7,225
  7. KONICA MINOLTA CORPORATION 7,216
  8. FUJI XEROX COMPANY 5,711
  9. CARL ZEISS SMT DE 4,971
  10. RICOH COMPANY JP 4,123

Top Applicants (CPC)

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