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CPC Main Group
B07B 4/00

Separating solids from solids by subjecting their mixture to gas currents (using tables or jigs B03B4/00)

Filing statistics

CPC B07B 4/00 belongs to the parent subclass B07B, which recorded 54,051 patent applications worldwide between 2013 and 2023. Annual filings grew from 1,351 in 2013 to 5,523 in 2023 (+309%), peaking at 9,253 applications in 2020. The most active applicants in class B07 are DERRICK CORPORATION (427 applications), SOLYSTIC (370 applications) and M-I SWACO (223 applications).

Source: EPO PATSTAT, worldwide filings

2 direct subcodes

Child Classifications

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  • B07B 4/08 while the mixtures are supported by sieves, screens, or like mechanical elements

Top Applicants

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

  1. DERRICK CORPORATION US 427
  2. SOLYSTIC FR 370
  3. M-I SWACO US 223
  4. SATAKE CORPORATION JP 190
  5. ANHUI JIEXUN OPTOELECTRONIC TECHNOLOGY COMPANY 186
  6. SIEMENS DE 175
  7. UNITED STATES POSTAL SERVICE US 158
  8. ANHUI UNIVERSITY OF SCIENCE & TECHNOLOGY 156
  9. UNITEC IT 150
  10. XINXIANG ZHEN YING MACHINERY EQUIPMENT COMPANY 149