CPC Main Group
B09C 1/00 Reclamation of contaminated soil
Filing statistics
CPC B09C 1/00 belongs to the parent subclass B09C, which recorded 17,375 patent applications worldwide between 2013 and 2023. Annual filings grew from 555 in 2013 to 1,774 in 2023 (+220%), peaking at 2,398 applications in 2020. The most active applicants in class B09 are CHINESE ACADEMY OF SCIENCES (533 applications), UNI-CHARM CORPORATION (166 applications) and CENTRAL SOUTH UNIVERSITY (160 applications).
Source: EPO PATSTAT, worldwide filings
7 direct subcodes
Child Classifications
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Top Applicants
Top 10 applicants by patent filingsfor 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