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DIFF Subgroup
B21D 26/021

Deforming sheet bodies

Introduced: January 2011

Full Title

Full titles differ between systems:

IPC:

Shaping without cutting otherwise than by using rigid devices or tools or yieldable or resilient pads, e.g. shaping by applying fluid pressure or magnetic forces > by applying fluid pressure > Deforming sheet bodies

CPC:

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

IPC and CPC are identically structured here. All 5 subcodes exist in both systems.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 2011.

Child Classifications

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  • B21D 26/023 including an additional treatment performed by fluid pressure, e.g. perforating since 2011 IPC+CPC Available in IPC and CPC
  • B21D 26/025 Means for controlling the clamping or opening of the moulds since 2011 IPC+CPC Available in IPC and CPC
  • B21D 26/027 Means for controlling fluid parameters, e.g. pressure or temperature since 2011 IPC+CPC Available in IPC and CPC
  • B21D 26/029 Closing or sealing means since 2011 IPC+CPC Available in IPC and CPC
  • B21D 26/031 Mould construction (B21D26/025 - B21D26/029 take precedence) since 2011 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class B21,2013–2023, worldwide · Source: EPO PATSTAT

  1. JFE STEEL 2,318
  2. JFE STEEL JP 2,294
  3. POSCO (POHANG IRON AND STEEL COMPANY) KR 2,083
  4. NIPPON STEEL CORPORATION JP 1,650
  5. NSSMC (NIPPON STEEL & SUMITOMO METAL) JP 1,631
  6. SMS GROUP DE 1,472
  7. BAOSHAN IRON & STEEL COMPANY 1,181
  8. SGCC(STATE GRID CORPORATION OF CHINA) 1,079
  9. ANHUI JIANGHUAI AUTOMOBILE 984
  10. HYUNDAI STEEL COMPANY KR 980

Top Applicants (CPC)

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