CPC Subgroup Additional Only
B08B 2209/027 for cleaning the internal surfaces
Full Title
Details of machines or methods for cleaning hollow articles > Details of apparatuses or methods for cleaning pipes or tubes > for cleaning the internal surfaces
2 direct subcodes
Child Classifications
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- B08B 2209/032 by the mechanical action of a moving fluid
- B08B 2209/04 using cleaning devices introduced into and moved along the pipes
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