Reclamation of contaminated soil

Introduced: January 1995

Last revised: January 2006

Classification Context

Section:: PERFORMING OPERATIONS; TRANSPORTING
Class:: DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
Subclass:: RECLAMATION OF CONTAMINATED SOIL

Filing statistics

IPC B09C 1/00 belongs to the parent subclass B09C, which recorded 29,744 patent applications worldwide between 2013 and 2023. Annual filings grew from 1,150 in 2013 to 3,215 in 2023 (+180%), peaking at 4,319 applications in 2020. 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

5 direct subcodes

Child Classifications

Navigate with arrow keys, Enter to open

B09C 1/02 Extraction using liquids, e.g. washing, leaching
B09C 1/04 Flotation
B09C 1/06 thermally
B09C 1/08 chemically
B09C 1/1 microbiologically or by using enzymes

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