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CPC Subgroup
B21D 26/021

Deforming sheet bodies

Full Title

Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces (stamping using resilient pads B21D22/10) > by applying fluid pressure > Deforming sheet bodies

Filing statistics

CPC B21D 26/021 belongs to the parent subclass B21D, which recorded 119,625 patent applications worldwide between 2013 and 2023. Annual filings grew from 6,189 in 2013 to 10,326 in 2023 (+67%), peaking at 14,303 applications in 2020. The most active applicants in class B21 are JFE STEEL (2,667 applications), NIPPON STEEL CORPORATION (2,049 applications) and POSCO (POHANG IRON AND STEEL COMPANY) (1,967 applications).

Source: EPO PATSTAT, worldwide filings

5 direct subcodes

Child Classifications

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  • B21D 26/023 including an additional treatment performed by fluid pressure, e.g. perforating
  • B21D 26/025 Means for controlling the clamping or opening of the moulds
  • B21D 26/027 Means for controlling fluid parameters, e.g. pressure or temperature
  • B21D 26/029 Closing or sealing means
  • B21D 26/031 Mould construction (B21D26/025 - B21D26/029 take precedence)

Top Applicants

Top 10 applicants by patent filingsfor class B21, 2013–2023, worldwide · Source: EPO PATSTAT

  1. JFE STEEL JP 2,667
  2. NIPPON STEEL CORPORATION JP 2,049
  3. POSCO (POHANG IRON AND STEEL COMPANY) KR 1,967
  4. NSSMC (NIPPON STEEL & SUMITOMO METAL) JP 1,800
  5. SMS GROUP DE 1,538
  6. JFE STEEL 1,150
  7. ARCELORMITTAL LU 1,142
  8. BAOSHAN IRON & STEEL COMPANY 821
  9. HYUNDAI STEEL COMPANY KR 808
  10. THYSSENKRUPP STEEL EUROPE DE 660