CPC Main Group
G03B 21/00 Projectors or projection-type viewers; Accessories therefor (devices for changing pictures G03B23/00)
Filing statistics
CPC G03B 21/00 belongs to the parent subclass G03B, which recorded 129,790 patent applications worldwide between 2013 and 2023. Annual filings grew from 7,927 in 2013 to 10,170 in 2023 (+28%), peaking at 14,495 applications in 2020. The most active applicants in class G03 are CANON (19,215 applications), CANON (12,916 applications) and ASML NETHERLANDS (10,000 applications).
Source: EPO PATSTAT, worldwide filings
13 direct subcodes
Child Classifications
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- G03B 21/02 Multiple-film apparatus
- G03B 21/06 affording only episcopic projection
- G03B 21/08 affording epidiascopic projection
- G03B 21/10 Projectors with built-in or built-on screen
- G03B 21/12 adapted for projection of either still pictures or motion pictures (prolonged exhibition of single frame G03B21/38)
- G03B 21/13 Projectors for producing special effects at the edges of picture, e.g. blurring
- G03B 21/132 Overhead projectors, i.e. capable of projecting hand-writing or drawing during action (epidiascopic projectors G03B21/08)
- G03B 21/134 Projectors combined with typing apparatus or with printing apparatus
- G03B 21/14 Details
- G03B 21/54 Accessories
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