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PCE
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DIFF Subgroup
B08B 9/043

moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes

Introduced: January 2000

Full Title

Full titles differ between systems:

IPC:

Cleaning hollow articles by methods or apparatus specially adapted thereto > Cleaning pipes or tubes or systems of pipes or tubes > Cleaning the internal surfaces; Removal of blockages > using cleaning devices introduced into and moved along the pipes > moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes

CPC:

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 > using cleaning devices introduced into and moved along the pipes > moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes

Of 4 combined children, 2 exist in both systems.

2 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 2000.

Child Classifications

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  • B08B 9/0433 CPC only CPC only
  • B08B 9/0436 CPC only CPC only
  • B08B 9/045 the cleaning devices being rotated while moved (B08B9/047 takes precedence) since 2000 IPC+CPC Available in IPC and CPC
  • B08B 9/047 the cleaning devices having motors for powering cleaning tools since 2000 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class B08,2013–2023, worldwide · Source: EPO PATSTAT

  1. SGCC(STATE GRID CORPORATION OF CHINA) 1,817
  2. SCREEN HOLDINGS JP 591
  3. TOKYO ELECTRON JP 558
  4. CHONGQING RUNZE PHARMACEUTICAL COMPANY 547
  5. APPLIED MATERIALS US 506
  6. CHINESE ACADEMY OF SCIENCES 490
  7. SEMES COMPANY KR 464
  8. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 411
  9. ECOLAB US 380
  10. PETROCHINA COMPANY 369

Top Applicants (CPC)

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