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DIFF Subgroup
B01D 47/14

Packed scrubbers (packing elements B01J19/30, B01J19/32)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Packed scrubbers

CPC: Packed scrubbers (packing elements B01J19/30, B01J19/32)

Full Title

Full titles differ between systems:

IPC:

Separating dispersed particles from gases, air or vapours by liquid as separating agent > Packed scrubbers

CPC:

Separating dispersed particles from gases, air or vapours by liquid as separating agent (B01D45/10 takes precedence; fractionating columns or parts thereof B01D3/16) > Packed scrubbers (packing elements B01J19/30, B01J19/32)

No child classifications to compare. This is a leaf node in both IPC and CPC.

Top Applicants

Top Applicants (IPC)

Class B01,2013–2023, worldwide · Source: EPO PATSTAT

  1. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 16,893
  2. CHINESE ACADEMY OF SCIENCES 11,733
  3. BASF (BADISCHE ANILIN & SODA FABRIK) DE 3,898
  4. LG CHEM KR 3,367
  5. PETROCHINA COMPANY 3,224
  6. IFPEN (IFP ENERGIES NOUVELLES) FR 3,042
  7. ZHEJIANG UNIVERSITY 2,890
  8. MANN + HUMMEL DE 2,740
  9. JOHNSON MATTHEY GB 2,534
  10. SAUDI ARABIAN OIL COMPANY SA 2,527

Top Applicants (CPC)

Class B01,2013–2023, worldwide · Source: EPO PATSTAT

  1. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 10,345
  2. CHINESE ACADEMY OF SCIENCES 8,352
  3. BASF (BADISCHE ANILIN & SODA FABRIK) DE 5,134
  4. LG CHEM KR 4,290
  5. SAUDI ARABIAN OIL COMPANY SA 3,444
  6. IFPEN (IFP ENERGIES NOUVELLES) FR 3,417
  7. DOW GLOBAL TECHNOLOGIES US 3,195
  8. MANN + HUMMEL DE 2,822
  9. JOHNSON MATTHEY GB 2,802
  10. UNIVERSAL OIL PRODUCTS COMPANY (UOP) US 2,737