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IPC Subgroup
B03B 13/04

using electrical or electromagnetic effects

Introduced: September 1968

Last revised: January 2006

Full Title

Control arrangements specially adapted for wet- separating apparatus or for dressing plant, using physical effects > using electrical or electromagnetic effects

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:
SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS

Filing statistics

IPC B03B 13/04 belongs to the parent subclass B03B, which recorded 22,452 patent applications worldwide between 2013 and 2023. Annual filings grew from 1,224 in 2013 to 2,396 in 2023 (+96%), peaking at 2,862 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

Top Applicants

Top 10 applicants by patent filingsfor class B03, 2013–2023, worldwide · Source: EPO PATSTAT

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