using cleaning devices introduced into and moved along the pipes

Introduced: September 1968

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

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

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

IPC defines codes here since 2000.

Child Classifications

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B08B 9/043 moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes since 2000 +2 CPC IPC+CPC Available in IPC and CPC
B08B 9/049 having self-contained propelling means for moving the cleaning devices along the pipes since 2000 +2 CPC IPC+CPC Available in IPC and CPC
B08B 9/053 moved along the pipes by a fluid, e.g. by fluid pressure or by suction since 2000 +1 CPC 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