CPC Main Group
G03B 9/00 Exposure-making shutters; Diaphragms
6 direct subcodes
Child Classifications
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- G03B 9/02 Diaphragms
- G03B 9/08 Shutters
- G03B 9/58 Means for varying duration of "open" period of shutter
- G03B 9/64 Mechanism for delaying opening of shutter (separate from shutter G03B17/38)
- G03B 9/66 Means for cocking shutter separate from means for releasing shutter
- G03B 9/70 with flash-synchronising contacts
Top Applicants
Top 10 applicants by patent filingsfor class G03, 2013–2023, worldwide · Source: EPO PATSTAT
- CANON JP 19,215
- CANON 12,916
- ASML NETHERLANDS NL 10,000
- FUJIFILM JP 7,814
- SAMSUNG ELECTRONICS COMPANY KR 5,181
- CARL ZEISS SMT DE 5,079
- RICOH COMPANY JP 4,343
- LG INNOTEK COMPANY KR 4,054
- KYOCERA DOCUMENT SOLUTIONS 3,812
- KYOCERA DOCUMENT SOLUTIONS JP 3,682