IPC Subgroup
G03B 27/52 Details
Introduced: September 1968
Last revised: January 2006
Full Title
Photographic printing apparatus > Projection printing apparatus, e.g. enlarger, copying camera > Details
Classification Context
- Section:
- PHYSICS
- Class:
- PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- Subclass:
- APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
8 direct subcodes
Child Classifications
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- G03B 27/53 Automatic registration or positioning of originals with respect to each other or the photosensitive layer
- G03B 27/54 Lamp housings; Illuminating means
- G03B 27/56 Mounting enlarger head on column
- G03B 27/58 Baseboards, masking frames, or other holders for the sensitive material
- G03B 27/62 Holders for the original
- G03B 27/66 specially adapted for holding half-tone screens
- G03B 27/68 Introducing or correcting distortion, e.g. in connection with oblique projection
- G03B 27/7 Reflectors in printing beam
Top Applicants
Top 10 applicants by patent filingsfor class G03, 2013–2023, worldwide · Source: EPO PATSTAT
- CANON 31,416
- CANON JP 17,469
- KYOCERA DOCUMENT SOLUTIONS 9,845
- RICOH COMPANY 9,807
- ASML NETHERLANDS NL 9,427
- FUJIFILM JP 7,225
- KONICA MINOLTA CORPORATION 7,216
- FUJI XEROX COMPANY 5,711
- CARL ZEISS SMT DE 4,971
- RICOH COMPANY JP 4,123