Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect

Filing statistics

CPC B03C 3/00 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

7 direct subcodes

Child Classifications

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B03C 3/01 Pretreatment of the gases prior to electrostatic precipitation
B03C 3/017 Combinations of electrostatic separation with other processes, not otherwise provided for
B03C 3/019 Post-treatment of gases
B03C 3/02 Plant or installations having external electricity supply
B03C 3/28 Plant or installations without electricity supply, e.g. using electrets
B03C 3/32 Transportable units, e.g. for cleaning room air
B03C 3/34 Constructional details or accessories or operation thereof

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