Skip to content
Search Classifications
Search for IPC and CPC classification codes or keywords
CPC Main Group
B01F 31/00

Mixers with shaking, oscillating, or vibrating mechanisms

Filing statistics

CPC B01F 31/00 belongs to the parent subclass B01F, which recorded 116,023 patent applications worldwide between 2013 and 2023. Annual filings grew from 5,784 in 2013 to 12,676 in 2023 (+119%), peaking at 16,395 applications in 2018. The most active applicants in class B01 are SINOPEC (CHINA PETROCHEMICAL CORPORATION) (10,345 applications), CHINESE ACADEMY OF SCIENCES (8,352 applications) and BASF (BADISCHE ANILIN & SODA FABRIK) (5,134 applications).

Source: EPO PATSTAT, worldwide filings

16 direct subcodes

Child Classifications

Navigate with arrow keys, Enter to open

  • B01F 31/10 with a mixing receptacle rotating alternately in opposite directions
  • B01F 31/29 Mixing by periodically deforming flexible tubular members through which the material is flowing
  • B01F 31/42 with pendulum stirrers, i.e. with stirrers suspended so as to oscillate about fixed points or axes
  • B01F 31/46 with an annular vibrating trough
  • B01F 31/50 with a receptacle submitted to a combination of movements, i.e. at least one vibratory or oscillatory movement
  • B01F 31/55 the materials to be mixed being contained in a flexible bag submitted to periodical deformation
  • B01F 31/60 with a vibrating receptacle (B01F31/10, B01F31/20, B01F31/50 take precedence)

Top Applicants

Top 10 applicants by patent filingsfor 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