IPC Subgroup
B08B 9/035 by suction
Introduced: January 2000
Last revised: January 2006
Full Title
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 > by the mechanical action of a moving fluid, e.g. by flushing > by suction
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- CLEANING
- Subclass:
- CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
Top Applicants
Top 10 applicants by patent filingsfor 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