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IPC Main Group
B21D 53/00

Making other particular articles

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
Subclass:
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL

Related Keywords

making CUTTING tools by working or processing sheet metal, metal tubes or profiles

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 53/74 frames for openings, e.g. for windows, doors, handbags
  • B21D 53/76 writing or drawing instruments, e.g. writing pens, erasing pens
  • B21D 53/78 propeller blades; turbine blades
  • B21D 53/8 dustproof covers; safety covers
  • B21D 53/82 perforated music sheets; pattern sheets, e.g. for control purposes, stencils
  • B21D 53/84 other parts for engines, e.g. connecting-rods
  • 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 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