B03C MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS (separating isotopes B01D59/00; combinations of magnetic or electrostatic separation with separation of solids by other means B03B, B07B)
Description
B03C covers separation technologies employing magnetic fields, electrostatic forces, or high-voltage electric fields to segregate solid materials from other solids or fluids. This subclass encompasses magnetic separators (permanent magnet and electromagnet-based systems), electrostatic separators, and corona-discharge or high-voltage techniques for particle classification and purification. Applications include mineral processing, recycling of electronic waste and metals, food processing contaminant removal, and industrial ore beneficiation. Separation methods relying on density differences using liquids or pneumatic equipment are excluded, falling instead under other B03 subclasses.
7 direct subcodes
Child Classifications
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- B03C 1/00 Magnetic separation
- B03C 11/00 Separation by high-voltage electrical fields, not provided for in other groups of this subclass
- B03C 2201/00 Details of magnetic or electrostatic separation
- B03C 3/00 Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C 5/00 Separating dispersed particles from liquids by electrostatic effect (combined with centrifuges B04B5/10)
- B03C 7/00 Separating solids from solids by electrostatic effect
- B03C 9/00 Electrostatic separation not provided for in any single one of the other main groups of this subclass
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