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CPC Subgroup
B09C 1/02

Extraction using liquids, e.g. washing, leaching

Full Title

Reclamation of contaminated soil > Extraction using liquids, e.g. washing, leaching

1 direct subcode

Child Classifications

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Top Applicants

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

  1. CHINESE ACADEMY OF SCIENCES 533
  2. UNI-CHARM CORPORATION JP 166
  3. CENTRAL SOUTH UNIVERSITY 160
  4. KMUST (KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY) 151
  5. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 147
  6. ZHEJIANG UNIVERSITY 144
  7. JX NIPPON MINING & METALS CORPORATION JP 141
  8. BEIJING GEOENVIRON ENGINEERING & TECHNOLOGY 139
  9. CHANGZHOU UNIVERSITY 128
  10. NANJING INSTITUTE OF ENVIRONMENTAL SCIENCES, MEE 124