Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
CPC Subgroup
B08B 9/032

by the mechanical action of a moving fluid, e.g. by flushing (B08B9/04 takes precedence )

Full Title

Cleaning hollow articles by methods or apparatus specially adapted thereto > Cleaning pipes or tubes or systems of pipes or tubes (apparatus for cleaning metal pipes by chemical methods C23G3/04) > Cleaning the internal surfaces; Removal of blockages > by the mechanical action of a moving fluid, e.g. by flushing (B08B9/04 takes precedence )

Filing statistics

CPC B08B 9/032 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

2 direct subcodes

Child Classifications

Navigate with arrow keys, Enter to open

Top Applicants

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

  1. TOKYO ELECTRON JP 982
  2. SCREEN HOLDINGS JP 980
  3. APPLIED MATERIALS US 739
  4. SGCC(STATE GRID CORPORATION OF CHINA) 721
  5. SEMES COMPANY KR 691
  6. ECOLAB US 515
  7. SCREEN HOLDINGS 510
  8. TOKYO ELECTRON 505
  9. PHILIPS ELECTRONICS NL 493
  10. EBARA CORPORATION JP 475