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
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
- 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