B08B 9/02 Cleaning pipes or tubes or systems of pipes or tubes (apparatus for cleaning metal pipes by chemical methods C23G3/04)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Cleaning pipes or tubes or systems of pipes or tubes
CPC: Cleaning pipes or tubes or systems of pipes or tubes (apparatus for cleaning metal pipes by chemical methods C23G3/04)
Full Title
Full titles differ between systems:
Cleaning hollow articles by methods or apparatus specially adapted thereto > Cleaning pipes or tubes or systems of pipes or tubes
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)
Of 3 combined children, 2 exist in both systems.
1 codes are CPC-only extensions.
IPC defines codes here since 2000.
Child Classifications
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- B08B 9/027 Cleaning the internal surfaces; Removal of blockages since 2000 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class B08,2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 1,817
- SCREEN HOLDINGS JP 591
- TOKYO ELECTRON JP 558
- CHONGQING RUNZE PHARMACEUTICAL COMPANY 547
- APPLIED MATERIALS US 506
- CHINESE ACADEMY OF SCIENCES 490
- SEMES COMPANY KR 464
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 411
- ECOLAB US 380
- PETROCHINA COMPANY 369
Top Applicants (CPC)
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