DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL

Description

B09 covers technologies and methods for the final disposal of solid waste materials and the remediation of soil contaminated with pollutants or hazardous substances. This includes mechanical, chemical, and biological treatment processes; landfill engineering; incineration systems; waste compaction and containment; and soil reclamation techniques such as excavation, chemical treatment, and bioremediation. The class encompasses both the operational procedures and equipment used in waste management facilities, excluding waste collection and transport operations, which fall under other B sections.

Filing statistics

CPC B09 recorded 53,557 patent applications worldwide between 2013 and 2023, summed across its 2 subclasses. Annual filings grew from 2,190 in 2013 to 6,350 in 2023 (+190%), peaking at 7,303 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

2 direct subcodes

Child Classifications

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B09B DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
B09C RECLAMATION OF CONTAMINATED SOIL (gatherers for removing stone or the like from the soil A01B43/00; sterilising soil by steam A01G11/00; removing undesirable matter, e.g. rubbish, from the land E01H15/00)

Top Applicants

Top 10 applicants by patent filings, 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