DIFF Subgroup
B09B 3/80 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
Additional Content IPC
Extraction Extractions Treatment of solid waste with solvents to separate the desired substance by using the difference in solubility
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
- CHINESE ACADEMY OF SCIENCES 776
- TAIHEIYO CEMENT CORPORATION 279
- BEIJING GEOENVIRON ENGINEERING & TECHNOLOGY 247
- ZHEJIANG UNIVERSITY 232
- CENTRAL SOUTH UNIVERSITY 212
- KMUST (KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY) 208
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 203
- CHANGZHOU UNIVERSITY 172
- BCEG ENVIRONMENTAL REMEDIATION COMPANY 167
- UNI-CHARM CORPORATION JP 165
Top Applicants (CPC)
Class B09,2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 533
- UNI-CHARM CORPORATION JP 166
- CENTRAL SOUTH UNIVERSITY 160
- KMUST (KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY) 151
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 147
- ZHEJIANG UNIVERSITY 144
- JX NIPPON MINING & METALS CORPORATION JP 141
- BEIJING GEOENVIRON ENGINEERING & TECHNOLOGY 139
- CHANGZHOU UNIVERSITY 128
- NANJING INSTITUTE OF ENVIRONMENTAL SCIENCES, MEE 124