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CPC Subgroup Additional Only
B01J 2219/32213

Plurality of essentially parallel sheets

Full Title

Chemical, physical or physico-chemical processes in general; Their relevant apparatus > Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer > Basic shape of the elements > Sheets > Plurality of essentially parallel sheets

2 direct subcodes

Child Classifications

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  • B01J 2219/32217 with sheets having corrugations which intersect at an angle of 90 degrees
  • B01J 2219/3222 with sheets having corrugations which intersect at an angle different from 90 degrees

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