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CPC Main Group
B21D 53/00

Making other particular articles (making wire fabrics B21F; making chains or chain parts B21L)

21 direct subcodes

Child Classifications

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  • B21D 53/14 belts, e.g. machine-gun belts
  • B21D 53/24 nuts or like thread-engaging members
  • B21D 53/36 clips, clamps, or like fastening or attaching devices, e.g. for electric installation
  • B21D 53/44 fancy goods, e.g. jewellery products
  • B21D 53/58 end-pieces for laces or ropes
  • B21D 53/76 writing or drawing instruments, e.g. writing pens, erasing pens
  • B21D 53/78 propeller blades; turbine blades
  • B21D 53/80 dustproof covers; safety covers
  • B21D 53/82 perforated music sheets; pattern sheets, e.g. for control purposes, stencils
  • B21D 53/86 other parts for bicycles or motorcycles

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