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IPC Subgroup
B09B 3/8

involving an extraction step

Introduced: January 2022

Full Title

Destroying solid waste or transforming solid waste into something useful or harmless > involving an extraction step

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
Subclass:
DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR

Filing statistics

IPC B09B 3/8 belongs to the parent subclass B09B, which recorded 69,632 patent applications worldwide between 2013 and 2023. Annual filings grew from 3,588 in 2013 to 8,905 in 2023 (+148%), peaking at 10,040 applications in 2022. The most active applicants in class B09 are CHINESE ACADEMY OF SCIENCES (776 applications), TAIHEIYO CEMENT CORPORATION (279 applications) and BEIJING GEOENVIRON ENGINEERING & TECHNOLOGY (247 applications).

Source: EPO PATSTAT, worldwide filings

Additional Content

Extraction Extractions Treatment of solid waste with solvents to separate the desired substance by using the difference in solubility

Top Applicants

Top 10 applicants by patent filingsfor class B09, 2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINESE ACADEMY OF SCIENCES 776
  2. TAIHEIYO CEMENT CORPORATION 279
  3. BEIJING GEOENVIRON ENGINEERING & TECHNOLOGY 247
  4. ZHEJIANG UNIVERSITY 232
  5. CENTRAL SOUTH UNIVERSITY 212
  6. KMUST (KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY) 208
  7. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 203
  8. CHANGZHOU UNIVERSITY 172
  9. BCEG ENVIRONMENTAL REMEDIATION COMPANY 167
  10. UNI-CHARM CORPORATION JP 165