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PCE
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IPC Subgroup
B08B 15/02

using chambers or hoods covering the area

Introduced: September 1968

Last revised: January 2006

Full Title

Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area > using chambers or hoods covering the area

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
CLEANING
Subclass:
CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL

Related Keywords

fume CUPBOARDSHOOD(S) for extracting dust or fumes

Top Applicants

Top 10 applicants by patent filingsfor 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