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PCE
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DIFF Subgroup
B01D 46/10

Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Filters or filtering processes specially modified for separating dispersed particles from gases or vapours > Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces

CPC:

Filters or filtering processes specially modified for separating dispersed particles from gases or vapours (filtering elements B01D24/00-B01D35/00; filtering material B01D39/00; their regeneration outside the filters B01D41/00) > Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces

Of 5 combined children, 3 exist in both systems.

2 codes are CPC-only extensions.

Child Classifications

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  • B01D 46/103 CPC only CPC only
  • B01D 46/106 CPC only CPC only
  • B01D 46/14 arranged in a star shape IPC+CPC Available in IPC and CPC
  • B01D 46/16 arranged on non-filtering conveyors IPC+CPC Available in 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