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DIFF Subgroup
B09B 3/70

Chemical treatment, e.g. pH adjustment or oxidation (involving an extraction step B09B3/80)

Introduced: January 2022

Title

Titles differ between systems:

IPC: Chemical treatment, e.g. pH adjustment or oxidation

CPC: Chemical treatment, e.g. pH adjustment or oxidation (involving an extraction step B09B3/80)

Full Title

Full titles differ between systems:

IPC:

Destroying solid waste or transforming solid waste into something useful or harmless > Chemical treatment, e.g. pH adjustment or oxidation

CPC:

Destroying solid waste or transforming solid waste into something useful or harmless > Chemical treatment, e.g. pH adjustment or oxidation (involving an extraction step B09B3/80)

No child classifications to compare. This is a leaf node in both IPC and CPC.

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

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