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CPC Subgroup Additional Only
F25J 2215/44

Ultra high purity nitrogen, i.e. generally less than 1 ppb impurities

Full Title

Processes characterised by the type or other details of the product stream > Nitrogen or special cases, e.g. multiple or low purity N2 > Ultra high purity nitrogen, i.e. generally less than 1 ppb impurities

Top Applicants

Top 10 applicants by patent filingsfor class F25, 2013–2023, worldwide · Source: EPO PATSTAT

  1. LG ELECTRONICS KR 9,415
  2. HAIER SMART HOME 8,015
  3. MITSUBISHI ELECTRIC CORPORATION JP 5,758
  4. BSH (BOSCH UND SIEMENS HAUSGERAETE) DE 3,827
  5. MIDEA 3,769
  6. GREE ELECTRIC APPLIANCES 3,417
  7. HAIER SMART HOME CN 3,403
  8. SAMSUNG ELECTRONICS COMPANY KR 3,329
  9. DAIKIN INDUSTRIES JP 2,908
  10. HEFEI MIDEA REFRIGERATOR COMPANY 2,186