Cleaning involving contact with liquid

Full Title

Cleaning by methods involving the use or presence of liquid or steam (B08B9/00 takes precedence) > Cleaning involving contact with liquid

Filing statistics

CPC B08B 3/04 belongs to the parent subclass B08B, which recorded 210,638 patent applications worldwide between 2013 and 2023. Annual filings grew from 6,498 in 2013 to 24,988 in 2023 (+285%), peaking at 32,580 applications in 2020. The most active applicants in class B08 are TOKYO ELECTRON (982 applications), SCREEN HOLDINGS (980 applications) and APPLIED MATERIALS (739 applications).

Source: EPO PATSTAT, worldwide filings

7 direct subcodes

Child Classifications

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B08B 3/041
B08B 3/044
B08B 3/045
B08B 3/048
B08B 3/06 using perforated drums in which the article or material is placed
B08B 3/08 the liquid having chemical or dissolving effect
B08B 3/10 with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration

Top Applicants

Top 10 applicants by patent filingsfor class B08, 2013–2023, worldwide · Source: EPO PATSTAT

TOKYO ELECTRON JP 982
SCREEN HOLDINGS JP 980
APPLIED MATERIALS US 739
SGCC(STATE GRID CORPORATION OF CHINA) 721
SEMES COMPANY KR 691
ECOLAB US 515
SCREEN HOLDINGS 510
TOKYO ELECTRON 505
PHILIPS ELECTRONICS NL 493
EBARA CORPORATION JP 475