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

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:: PERFORMING OPERATIONS; TRANSPORTING
Class:: SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
Subclass:: MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS

Filing statistics

IPC B03C 3/00 belongs to the parent subclass B03C, which recorded 74,934 patent applications worldwide between 2013 and 2023. Annual filings grew from 3,063 in 2013 to 8,528 in 2023 (+178%), peaking at 10,145 applications in 2020. The most active applicants in class B03 are CHINA UNIVERSITY OF MINING AND TECHNOLOGY (535 applications), CENTRAL SOUTH UNIVERSITY (526 applications) and KMUST (KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY) (510 applications).

Source: EPO PATSTAT, worldwide filings

Additional Content

Exhaust or silencing apparatus for machines or engines having means for removing solid constituents of exhaust, using electric or electrostatic separators

Related Keywords

electrostatic precipitators for cleaning AIRdispersing or dispelling FOG by electrostatic precipitationdispersing MIST or fog by electro-static precipitationremoving SMOKE electrostatically

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

CHINA UNIVERSITY OF MINING AND TECHNOLOGY 535
CENTRAL SOUTH UNIVERSITY 526
KMUST (KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY) 510
OUTOTEC (FINLAND) FI 255
GREE ELECTRIC APPLIANCES 231
LG ELECTRONICS KR 214
JIANGXI UNIVERSITY OF SCIENCE AND TECHNOLOGY 214
BASF (BADISCHE ANILIN & SODA FABRIK) DE 213
SHANGHAI BIXIUFU ENTERPRISE MANAGEMENT COMPANY CN 208
NORTHEASTERN UNIVERSITY 196