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IPC Subgroup
B07B 4/08

while the mixtures are supported by sieves, screens, or like mechanical elements

Introduced: September 1968

Last revised: January 2006

Full Title

Separating solids from solids by subjecting their mixture to gas currents > while the mixtures are supported by sieves, screens, or like mechanical elements

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
SEPARATING SOLIDS FROM SOLIDS; SORTING
Subclass:
SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL

Filing statistics

IPC B07B 4/08 belongs to the parent subclass B07B, which recorded 222,813 patent applications worldwide between 2013 and 2023. Annual filings grew from 4,752 in 2013 to 35,068 in 2023 (+638%), peaking at 37,823 applications in 2020. The most active applicants in class B07 are ANHUI JIEXUN OPTOELECTRONIC TECHNOLOGY COMPANY (444 applications), HENAN WINNER VIBRATING EQUIPMENT COMPANY (386 applications) and DERRICK CORPORATION (370 applications).

Source: EPO PATSTAT, worldwide filings

Top Applicants

Top 10 applicants by patent filingsfor class B07, 2013–2023, worldwide · Source: EPO PATSTAT

  1. ANHUI JIEXUN OPTOELECTRONIC TECHNOLOGY COMPANY 444
  2. HENAN WINNER VIBRATING EQUIPMENT COMPANY 386
  3. DERRICK CORPORATION US 370
  4. SOLYSTIC FR 359
  5. XINXIANG ZHEN YING MACHINERY EQUIPMENT COMPANY 347
  6. ANHUI UNIVERSITY OF SCIENCE & TECHNOLOGY 288
  7. CHINA UNIVERSITY OF MINING AND TECHNOLOGY 269
  8. CHINA TOBACCO HENAN INDUSTRIAL 230
  9. KMUST (KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY) 230
  10. XINXIANG GAOFU MACHINERY COMPANY 229