B03C 3/04 dry type
Full Title
Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect > Plant or installations having external electricity supply > dry type
Filing statistics
CPC B03C 3/04 belongs to the parent subclass B03C, which recorded 31,675 patent applications worldwide between 2013 and 2023. Annual filings grew from 1,491 in 2013 to 2,894 in 2023 (+94%), peaking at 4,105 applications in 2020. The most active applicants in class B03 are CENTRAL SOUTH UNIVERSITY (405 applications), CHINA UNIVERSITY OF MINING AND TECHNOLOGY (310 applications) and KMUST (KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY) (303 applications).
Source: EPO PATSTAT, worldwide filings
6 direct subcodes
Child Classifications
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- B03C 3/06 characterised by presence of stationary tube electrodes
- B03C 3/08 characterised by presence of stationary flat electrodes arranged with their flat surfaces parallel to the gas stream
- B03C 3/09 characterised by presence of stationary flat electrodes arranged with their flat surfaces at right angles to the gas stream
- B03C 3/10 characterised by presence of electrodes moving during separating action
- B03C 3/12 characterised by separation of ionising and collecting stations
- B03C 3/14 characterised by the additional use of mechanical effects, e.g. gravity (B03C3/32 takes precedence)
Top Applicants
Top 10 applicants by patent filingsfor class B03, 2013–2023, worldwide · Source: EPO PATSTAT
- CENTRAL SOUTH UNIVERSITY 405
- CHINA UNIVERSITY OF MINING AND TECHNOLOGY 310
- KMUST (KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY) 303
- SHANGHAI BIXIUFU ENTERPRISE MANAGEMENT COMPANY CN 296
- OUTOTEC (FINLAND) FI 252
- LG ELECTRONICS KR 234
- CIDRA CORPORATE SERVICES US 232
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 218
- ADEY HOLDINGS (2008) GB 169
- FLSMIDTH DK 166